Finding the Third Proportional to 118,500.50 and 253,609

Step by Step Solution

1. Step 1: Write the proportion equation
   118,500.50 : 253,609 = 253,609 : x
2. Step 2: Convert to fraction form
   118,500.50/253,609 = 253,609/x
3. Step 3: Cross multiply
   118,500.50x = 253,609 × 253,609
4. Step 4: Simplify right side
   118,500.50x = 64,317,524,881
5. Step 5: Solve for x
   x = 64,317,524,881/118,500.50
6. Step 6: Final answer
   x = 542,761.63