Finding the Third Proportional to 207,707,719.50 and 328,899,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,707,719.50 : 328,899,892.50 = 328,899,892.50 : x
2. Step 2: Convert to fraction form
   207,707,719.50/328,899,892.50 = 328,899,892.50/x
3. Step 3: Cross multiply
   207,707,719.50x = 328,899,892.50 × 328,899,892.50
4. Step 4: Simplify right side
   207,707,719.50x = 108,175,139,286,511,552
5. Step 5: Solve for x
   x = 108,175,139,286,511,552/207,707,719.50
6. Step 6: Final answer
   x = 520,804,616.92