Finding the Third Proportional to 111,689 and 240,874

Step by Step Solution

1. Step 1: Write the proportion equation
   111,689 : 240,874 = 240,874 : x
2. Step 2: Convert to fraction form
   111,689/240,874 = 240,874/x
3. Step 3: Cross multiply
   111,689x = 240,874 × 240,874
4. Step 4: Simplify right side
   111,689x = 58,020,283,876
5. Step 5: Solve for x
   x = 58,020,283,876/111,689
6. Step 6: Final answer
   x = 519,480.74