Finding the Third Proportional to 258,432 and 547,550.25

Step by Step Solution

1. Step 1: Write the proportion equation
   258,432 : 547,550.25 = 547,550.25 : x
2. Step 2: Convert to fraction form
   258,432/547,550.25 = 547,550.25/x
3. Step 3: Cross multiply
   258,432x = 547,550.25 × 547,550.25
4. Step 4: Simplify right side
   258,432x = 299,811,276,275.06
5. Step 5: Solve for x
   x = 299,811,276,275.06/258,432
6. Step 6: Final answer
   x = 1,160,116.69