Finding the Third Proportional to 111,686 and 240,867

Step by Step Solution

1. Step 1: Write the proportion equation
   111,686 : 240,867 = 240,867 : x
2. Step 2: Convert to fraction form
   111,686/240,867 = 240,867/x
3. Step 3: Cross multiply
   111,686x = 240,867 × 240,867
4. Step 4: Simplify right side
   111,686x = 58,016,911,689
5. Step 5: Solve for x
   x = 58,016,911,689/111,686
6. Step 6: Final answer
   x = 519,464.50