Finding the Third Proportional to 59,643 and 80,712

Step by Step Solution

1. Step 1: Write the proportion equation
   59,643 : 80,712 = 80,712 : x
2. Step 2: Convert to fraction form
   59,643/80,712 = 80,712/x
3. Step 3: Cross multiply
   59,643x = 80,712 × 80,712
4. Step 4: Simplify right side
   59,643x = 6,514,426,944
5. Step 5: Solve for x
   x = 6,514,426,944/59,643
6. Step 6: Final answer
   x = 109,223.66