Finding the Third Proportional to 117,139,541.25 and 171,397,308

Step by Step Solution

1. Step 1: Write the proportion equation
   117,139,541.25 : 171,397,308 = 171,397,308 : x
2. Step 2: Convert to fraction form
   117,139,541.25/171,397,308 = 171,397,308/x
3. Step 3: Cross multiply
   117,139,541.25x = 171,397,308 × 171,397,308
4. Step 4: Simplify right side
   117,139,541.25x = 29,377,037,189,646,864
5. Step 5: Solve for x
   x = 29,377,037,189,646,864/117,139,541.25
6. Step 6: Final answer
   x = 250,786,684.63