Finding the Third Proportional to 15.56 and 32.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15.56 : 32.72 = 32.72 : x
2. Step 2: Convert to fraction form
   15.56/32.72 = 32.72/x
3. Step 3: Cross multiply
   15.56x = 32.72 × 32.72
4. Step 4: Simplify right side
   15.56x = 1,070.52
5. Step 5: Solve for x
   x = 1,070.52/15.56
6. Step 6: Final answer
   x = 68.79