Finding the Third Proportional to 250,128 and 516,904

Step by Step Solution

1. Step 1: Write the proportion equation
   250,128 : 516,904 = 516,904 : x
2. Step 2: Convert to fraction form
   250,128/516,904 = 516,904/x
3. Step 3: Cross multiply
   250,128x = 516,904 × 516,904
4. Step 4: Simplify right side
   250,128x = 267,189,745,216
5. Step 5: Solve for x
   x = 267,189,745,216/250,128
6. Step 6: Final answer
   x = 1,068,212.06