Finding the Third Proportional to 118,401.50 and 253,651

Step by Step Solution

1. Step 1: Write the proportion equation
   118,401.50 : 253,651 = 253,651 : x
2. Step 2: Convert to fraction form
   118,401.50/253,651 = 253,651/x
3. Step 3: Cross multiply
   118,401.50x = 253,651 × 253,651
4. Step 4: Simplify right side
   118,401.50x = 64,338,829,801
5. Step 5: Solve for x
   x = 64,338,829,801/118,401.50
6. Step 6: Final answer
   x = 543,395.39