Finding the Third Proportional to 42.09 and 63.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42.09 : 63.49 = 63.49 : x
2. Step 2: Convert to fraction form
   42.09/63.49 = 63.49/x
3. Step 3: Cross multiply
   42.09x = 63.49 × 63.49
4. Step 4: Simplify right side
   42.09x = 4,031.33
5. Step 5: Solve for x
   x = 4,031.33/42.09
6. Step 6: Final answer
   x = 95.78