Finding the Third Proportional to 108,540.50 and 231,418

Step by Step Solution

1. Step 1: Write the proportion equation
   108,540.50 : 231,418 = 231,418 : x
2. Step 2: Convert to fraction form
   108,540.50/231,418 = 231,418/x
3. Step 3: Cross multiply
   108,540.50x = 231,418 × 231,418
4. Step 4: Simplify right side
   108,540.50x = 53,554,290,724
5. Step 5: Solve for x
   x = 53,554,290,724/108,540.50
6. Step 6: Final answer
   x = 493,403.76