Finding the Third Proportional to 32.20 and 86.91

Step by Step Solution

1. Step 1: Write the proportion equation
   32.20 : 86.91 = 86.91 : x
2. Step 2: Convert to fraction form
   32.20/86.91 = 86.91/x
3. Step 3: Cross multiply
   32.20x = 86.91 × 86.91
4. Step 4: Simplify right side
   32.20x = 7,552.70
5. Step 5: Solve for x
   x = 7,552.70/32.20
6. Step 6: Final answer
   x = 234.53