Finding the Third Proportional to 239,647.50 and 521,577

Step by Step Solution

1. Step 1: Write the proportion equation
   239,647.50 : 521,577 = 521,577 : x
2. Step 2: Convert to fraction form
   239,647.50/521,577 = 521,577/x
3. Step 3: Cross multiply
   239,647.50x = 521,577 × 521,577
4. Step 4: Simplify right side
   239,647.50x = 272,042,566,929
5. Step 5: Solve for x
   x = 272,042,566,929/239,647.50
6. Step 6: Final answer
   x = 1,135,177.99