Randy wants to put a security light in a man-made pond to monitor wildlife. He has a 23\displaystyle {23} foot guy wire to attach to a pole that needs to stand 21\displaystyle {21} feet out of the water. If he marks a position to attach the guy wire to level ground, how far out in the water should the pole be from that position? Round your answer to two decimal places.

x\displaystyle {x} = feet