Finding the Third Proportional to 111,116.25 and 239,607

Step by Step Solution

1. Step 1: Write the proportion equation
   111,116.25 : 239,607 = 239,607 : x
2. Step 2: Convert to fraction form
   111,116.25/239,607 = 239,607/x
3. Step 3: Cross multiply
   111,116.25x = 239,607 × 239,607
4. Step 4: Simplify right side
   111,116.25x = 57,411,514,449
5. Step 5: Solve for x
   x = 57,411,514,449/111,116.25
6. Step 6: Final answer
   x = 516,679.73