Finding the Third Proportional to 138,231,412 and 296,976,700

Step by Step Solution

1. Step 1: Write the proportion equation
   138,231,412 : 296,976,700 = 296,976,700 : x
2. Step 2: Convert to fraction form
   138,231,412/296,976,700 = 296,976,700/x
3. Step 3: Cross multiply
   138,231,412x = 296,976,700 × 296,976,700
4. Step 4: Simplify right side
   138,231,412x = 88,195,160,342,890,000
5. Step 5: Solve for x
   x = 88,195,160,342,890,000/138,231,412
6. Step 6: Final answer
   x = 638,025,460.83