Finding the Third Proportional to 451,499 and 663,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   451,499 : 663,761.50 = 663,761.50 : x
2. Step 2: Convert to fraction form
   451,499/663,761.50 = 663,761.50/x
3. Step 3: Cross multiply
   451,499x = 663,761.50 × 663,761.50
4. Step 4: Simplify right side
   451,499x = 440,579,328,882.25
5. Step 5: Solve for x
   x = 440,579,328,882.25/451,499
6. Step 6: Final answer
   x = 975,814.63