Finding the Third Proportional to 239,722.50 and 516,806

Step by Step Solution

1. Step 1: Write the proportion equation
   239,722.50 : 516,806 = 516,806 : x
2. Step 2: Convert to fraction form
   239,722.50/516,806 = 516,806/x
3. Step 3: Cross multiply
   239,722.50x = 516,806 × 516,806
4. Step 4: Simplify right side
   239,722.50x = 267,088,441,636
5. Step 5: Solve for x
   x = 267,088,441,636/239,722.50
6. Step 6: Final answer
   x = 1,114,156.75