Finding the Third Proportional to 105,959 and 220,540

Step by Step Solution

1. Step 1: Write the proportion equation
   105,959 : 220,540 = 220,540 : x
2. Step 2: Convert to fraction form
   105,959/220,540 = 220,540/x
3. Step 3: Cross multiply
   105,959x = 220,540 × 220,540
4. Step 4: Simplify right side
   105,959x = 48,637,891,600
5. Step 5: Solve for x
   x = 48,637,891,600/105,959
6. Step 6: Final answer
   x = 459,025.58