From The Department of Hmmmm....
If you divided the square feet in Texas by the world's population, what would be the square foot area available per person?
Texas land area is: 261,232 square miles (http://www.texasalmanac.com/topics/facts-profile)
1 square mile = 640 acres: 261,232 x 640 = 167,188,480 square acres
1 acre = 43,560 square feet: 167,188,480 x 43,560 = 7,282,730,188,800 square feet
World Population: 7,000,000,000 (https://en.wikipedia.org/wiki/World_population)
Thus: 7,282,730,188,800 square feet divided by 7,000,000,000 people = 1040.39 square feet per person