Finding the Third Proportional to 138,231,276 and 296,976,472

Step by Step Solution

1. Step 1: Write the proportion equation
   138,231,276 : 296,976,472 = 296,976,472 : x
2. Step 2: Convert to fraction form
   138,231,276/296,976,472 = 296,976,472/x
3. Step 3: Cross multiply
   138,231,276x = 296,976,472 × 296,976,472
4. Step 4: Simplify right side
   138,231,276x = 88,195,024,921,566,784
5. Step 5: Solve for x
   x = 88,195,024,921,566,784/138,231,276
6. Step 6: Final answer
   x = 638,025,108.89