The 3rd and 4th power balls are near the ceiling, and you will need the grappling bowtie to get to them.
(*if the minibots or Director D freeze up, you must reset Poptropica on your browser and play from the start of the Control Center sequence. For some unknown reason, this end part of the game "locks up" more than any other part of Poptropica.)
Although there are only 2 yellow orbs on the floor, there are 2 more higher up that can be reached with the grappling bowtie. Whenever a plug from a minibot touches an orb, it explodes.
Reboot Poptropica without saving. You will replay the satellite control center part. If either a minibot or Director D stops attacking, you cannot continue the game and must reboot. This is a known glitch.
There are 4 yellow "power orbs" in the room, one in each corner, two at the bottom and two higher up. Use the grapple bowtie to reach the two at the top. Each minibot will be destroyed when its plug touches one of the orbs. (NOTE : Game may freeze up during minibots or Director D battle. Reboot Poptropica if your enemy stops moving. You will replay the satellite control center.)
Since you can play the planets in any order, the third robot could be any of the "boss" creatures on the planets. (see the related questions)
There is no Third Island in Pokémon Crystal
The third gym leader is Lt. Surge, an electric Pokemon trainer. In the yellow version his only Pokemon is Raichu. Raichu can be easily defeated by a ground type Pokemon. Conveniently, Diglett's Cave is located right next to the town. In here you can find wild Diglett's and maybe wild Dugtrio's, the evolved form of Diglett. These Pokemon can easily defeat Lt. Surge with the Dig attack.
you defeat her three machines. But beware the third one is nearly impossible!!
There isn't a third island in Pokemon emerald.
Battling the four mini-bots in the laser satellite, you must lead each one to a glowing yellow power ball. There are two balls on the floor and two more near the ceiling.
on the third island near the air port near the fountain there is a small shop with a yellow marker out side walk into the yellow marker to start the mission
Go east of Vermilion City until you find a cave, which should contain the Pokemon diglet. This Pokemon is a ground-type, which electric is useless against. With his Dig attack, it should be no problem winning in the third gym
I think you have to be level 16 to summon a third island.