Finding the Third Proportional to 16.50 and 18.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16.50 : 18.25 = 18.25 : x
2. Step 2: Convert to fraction form
   16.50/18.25 = 18.25/x
3. Step 3: Cross multiply
   16.50x = 18.25 × 18.25
4. Step 4: Simplify right side
   16.50x = 333.06
5. Step 5: Solve for x
   x = 333.06/16.50
6. Step 6: Final answer
   x = 20.19