Finding the Third Proportional to 12.50 and 18.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12.50 : 18.81 = 18.81 : x
2. Step 2: Convert to fraction form
   12.50/18.81 = 18.81/x
3. Step 3: Cross multiply
   12.50x = 18.81 × 18.81
4. Step 4: Simplify right side
   12.50x = 353.91
5. Step 5: Solve for x
   x = 353.91/12.50
6. Step 6: Final answer
   x = 28.31