Finding the Third Proportional to 258,433.50 and 547,554

Step by Step Solution

1. Step 1: Write the proportion equation
   258,433.50 : 547,554 = 547,554 : x
2. Step 2: Convert to fraction form
   258,433.50/547,554 = 547,554/x
3. Step 3: Cross multiply
   258,433.50x = 547,554 × 547,554
4. Step 4: Simplify right side
   258,433.50x = 299,815,382,916
5. Step 5: Solve for x
   x = 299,815,382,916/258,433.50
6. Step 6: Final answer
   x = 1,160,125.85