Finding the Third Proportional to 238,747.50 and 516,861

Step by Step Solution

1. Step 1: Write the proportion equation
   238,747.50 : 516,861 = 516,861 : x
2. Step 2: Convert to fraction form
   238,747.50/516,861 = 516,861/x
3. Step 3: Cross multiply
   238,747.50x = 516,861 × 516,861
4. Step 4: Simplify right side
   238,747.50x = 267,145,293,321
5. Step 5: Solve for x
   x = 267,145,293,321/238,747.50
6. Step 6: Final answer
   x = 1,118,944.88