Finding the Third Proportional to 357,451.50 and 527,859

Step by Step Solution

1. Step 1: Write the proportion equation
   357,451.50 : 527,859 = 527,859 : x
2. Step 2: Convert to fraction form
   357,451.50/527,859 = 527,859/x
3. Step 3: Cross multiply
   357,451.50x = 527,859 × 527,859
4. Step 4: Simplify right side
   357,451.50x = 278,635,123,881
5. Step 5: Solve for x
   x = 278,635,123,881/357,451.50
6. Step 6: Final answer
   x = 779,504.70