What was the professional career that George Washington held at the age of 17?
At the age of 17 George Washington would receive his land surveyor's license in Virginia. Prior to becoming a surveyor, he wanted to join the Navy, but his mother refused to let him. So, he accompanied George William Fairfax as a surveyor to the unexplored wilderness of the Virginia frontier. George read mathematical texts to learn the geometric principles necessary for surveying.
He would then secure an appointment as county surveyor for the newly created frontier county of Culpeper. He was well on his way to a profitable career.