Finding the Third Proportional to 137,872,369 and 298,721,900

Step by Step Solution

1. Step 1: Write the proportion equation
   137,872,369 : 298,721,900 = 298,721,900 : x
2. Step 2: Convert to fraction form
   137,872,369/298,721,900 = 298,721,900/x
3. Step 3: Cross multiply
   137,872,369x = 298,721,900 × 298,721,900
4. Step 4: Simplify right side
   137,872,369x = 89,234,773,539,610,000
5. Step 5: Solve for x
   x = 89,234,773,539,610,000/137,872,369
6. Step 6: Final answer
   x = 647,227,389.99