Finding the Third Proportional to 111,358.50 and 239,949

Step by Step Solution

1. Step 1: Write the proportion equation
   111,358.50 : 239,949 = 239,949 : x
2. Step 2: Convert to fraction form
   111,358.50/239,949 = 239,949/x
3. Step 3: Cross multiply
   111,358.50x = 239,949 × 239,949
4. Step 4: Simplify right side
   111,358.50x = 57,575,522,601
5. Step 5: Solve for x
   x = 57,575,522,601/111,358.50
6. Step 6: Final answer
   x = 517,028.54