Finding the Third Proportional to 12.38 and 18.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12.38 : 18.83 = 18.83 : x
2. Step 2: Convert to fraction form
   12.38/18.83 = 18.83/x
3. Step 3: Cross multiply
   12.38x = 18.83 × 18.83
4. Step 4: Simplify right side
   12.38x = 354.42
5. Step 5: Solve for x
   x = 354.42/12.38
6. Step 6: Final answer
   x = 28.63