Finding the Third Proportional to 111,016.50 and 239,790

Step by Step Solution

1. Step 1: Write the proportion equation
   111,016.50 : 239,790 = 239,790 : x
2. Step 2: Convert to fraction form
   111,016.50/239,790 = 239,790/x
3. Step 3: Cross multiply
   111,016.50x = 239,790 × 239,790
4. Step 4: Simplify right side
   111,016.50x = 57,499,244,100
5. Step 5: Solve for x
   x = 57,499,244,100/111,016.50
6. Step 6: Final answer
   x = 517,934.22