Finding the Third Proportional to 117,139,507.50 and 171,397,264.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,139,507.50 : 171,397,264.50 = 171,397,264.50 : x
2. Step 2: Convert to fraction form
   117,139,507.50/171,397,264.50 = 171,397,264.50/x
3. Step 3: Cross multiply
   117,139,507.50x = 171,397,264.50 × 171,397,264.50
4. Step 4: Simplify right side
   117,139,507.50x = 29,377,022,278,082,960
5. Step 5: Solve for x
   x = 29,377,022,278,082,960/117,139,507.50
6. Step 6: Final answer
   x = 250,786,629.59