Finding the Third Proportional to 60,560 and 86,688

Step by Step Solution

1. Step 1: Write the proportion equation
   60,560 : 86,688 = 86,688 : x
2. Step 2: Convert to fraction form
   60,560/86,688 = 86,688/x
3. Step 3: Cross multiply
   60,560x = 86,688 × 86,688
4. Step 4: Simplify right side
   60,560x = 7,514,809,344
5. Step 5: Solve for x
   x = 7,514,809,344/60,560
6. Step 6: Final answer
   x = 124,088.66