Finding the Third Proportional to 111,687.75 and 238,959

Step by Step Solution

1. Step 1: Write the proportion equation
   111,687.75 : 238,959 = 238,959 : x
2. Step 2: Convert to fraction form
   111,687.75/238,959 = 238,959/x
3. Step 3: Cross multiply
   111,687.75x = 238,959 × 238,959
4. Step 4: Simplify right side
   111,687.75x = 57,101,403,681
5. Step 5: Solve for x
   x = 57,101,403,681/111,687.75
6. Step 6: Final answer
   x = 511,259.33