Finding the Third Proportional to 256,332 and 552,105

Step by Step Solution

1. Step 1: Write the proportion equation
   256,332 : 552,105 = 552,105 : x
2. Step 2: Convert to fraction form
   256,332/552,105 = 552,105/x
3. Step 3: Cross multiply
   256,332x = 552,105 × 552,105
4. Step 4: Simplify right side
   256,332x = 304,819,931,025
5. Step 5: Solve for x
   x = 304,819,931,025/256,332
6. Step 6: Final answer
   x = 1,189,160.66