The geographic center of those 2 points is around Latitude: 83° N Longitude: 6° W which is in the Artic Ocean 120 mile north east of Greenland.
However if you simply average the longitude and latitude you get Latitude: 41°32′28″N Longitude: 9°09′57″W near Esposende, Portugal
The halfway point between Davenport Iowa and Detroit Michigan is in New Buffalo, Michigan.
The halfway point is Conover, Iowa.
Kansas
West Union, Iowa is the halfway point.
The halfway point is Chester, Iowa.
The halfway point between Mt. Pleasant, Iowa, and Branson, Missouri, is about halfway between Fulton and Jefferson City, Missouri.
The halfway point between Clinton Iowa and Atlanta Georgia falls around County Road 1200 North, Metropolis, IL 62960, USA.
Des Monien Iowa
Pyatts, Illinois.
Loring, Iowa.
The letter "o."
The halfway point is just west of Iowa City, Iowa.