Finding the Third Proportional to 73,008 and 80,688

Step by Step Solution

1. Step 1: Write the proportion equation
   73,008 : 80,688 = 80,688 : x
2. Step 2: Convert to fraction form
   73,008/80,688 = 80,688/x
3. Step 3: Cross multiply
   73,008x = 80,688 × 80,688
4. Step 4: Simplify right side
   73,008x = 6,510,553,344
5. Step 5: Solve for x
   x = 6,510,553,344/73,008
6. Step 6: Final answer
   x = 89,175.89