Finding the Third Proportional to 6.38 and 10.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6.38 : 10.88 = 10.88 : x
2. Step 2: Convert to fraction form
   6.38/10.88 = 10.88/x
3. Step 3: Cross multiply
   6.38x = 10.88 × 10.88
4. Step 4: Simplify right side
   6.38x = 118.27
5. Step 5: Solve for x
   x = 118.27/6.38
6. Step 6: Final answer
   x = 18.55