Finding the Third Proportional to 42.28 and 63.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42.28 : 63.88 = 63.88 : x
2. Step 2: Convert to fraction form
   42.28/63.88 = 63.88/x
3. Step 3: Cross multiply
   42.28x = 63.88 × 63.88
4. Step 4: Simplify right side
   42.28x = 4,081.01
5. Step 5: Solve for x
   x = 4,081.01/42.28
6. Step 6: Final answer
   x = 96.52