Finding the Third Proportional to 42.75 and 62.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42.75 : 62.16 = 62.16 : x
2. Step 2: Convert to fraction form
   42.75/62.16 = 62.16/x
3. Step 3: Cross multiply
   42.75x = 62.16 × 62.16
4. Step 4: Simplify right side
   42.75x = 3,863.40
5. Step 5: Solve for x
   x = 3,863.40/42.75
6. Step 6: Final answer
   x = 90.37