Finding the Third Proportional to 398,539 and 592,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   398,539 : 592,162.50 = 592,162.50 : x
2. Step 2: Convert to fraction form
   398,539/592,162.50 = 592,162.50/x
3. Step 3: Cross multiply
   398,539x = 592,162.50 × 592,162.50
4. Step 4: Simplify right side
   398,539x = 350,656,426,406.25
5. Step 5: Solve for x
   x = 350,656,426,406.25/398,539
6. Step 6: Final answer
   x = 879,854.74