Finding the Third Proportional to 198,594 and 425,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,594 : 425,617.50 = 425,617.50 : x
2. Step 2: Convert to fraction form
   198,594/425,617.50 = 425,617.50/x
3. Step 3: Cross multiply
   198,594x = 425,617.50 × 425,617.50
4. Step 4: Simplify right side
   198,594x = 181,150,256,306.25
5. Step 5: Solve for x
   x = 181,150,256,306.25/198,594
6. Step 6: Final answer
   x = 912,163.79