Finding the Third Proportional to 398,781 and 595,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   398,781 : 595,561.50 = 595,561.50 : x
2. Step 2: Convert to fraction form
   398,781/595,561.50 = 595,561.50/x
3. Step 3: Cross multiply
   398,781x = 595,561.50 × 595,561.50
4. Step 4: Simplify right side
   398,781x = 354,693,500,282.25
5. Step 5: Solve for x
   x = 354,693,500,282.25/398,781
6. Step 6: Final answer
   x = 889,444.33