Finding the Third Proportional to 10.88 and 18.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10.88 : 18.50 = 18.50 : x
2. Step 2: Convert to fraction form
   10.88/18.50 = 18.50/x
3. Step 3: Cross multiply
   10.88x = 18.50 × 18.50
4. Step 4: Simplify right side
   10.88x = 342.25
5. Step 5: Solve for x
   x = 342.25/10.88
6. Step 6: Final answer
   x = 31.47