Answer:
545454
Explanation:
This is a ratio. you take 666/333 = x/272727. Basically tis says 666 cm to 333 m is equal to some number of centimeters to 272727 meters. Then just solve for x. 272727(666/333) = 545454.
Another way of looking at it is what did we multiply 333 by to get 666. Answe is 2, so we do the same for 272727. 2*272727 = 545454
If you wanted to you could have also converted units so everything was in either centimeters of meters, but as long as you keep things in the right order this works.