Finding the Third Proportional to 113,116.50 and 240,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,116.50 : 240,691.50 = 240,691.50 : x
2. Step 2: Convert to fraction form
   113,116.50/240,691.50 = 240,691.50/x
3. Step 3: Cross multiply
   113,116.50x = 240,691.50 × 240,691.50
4. Step 4: Simplify right side
   113,116.50x = 57,932,398,172.25
5. Step 5: Solve for x
   x = 57,932,398,172.25/113,116.50
6. Step 6: Final answer
   x = 512,148.08