Finding the Third Proportional to 12.38 and 18.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12.38 : 18.50 = 18.50 : x
2. Step 2: Convert to fraction form
   12.38/18.50 = 18.50/x
3. Step 3: Cross multiply
   12.38x = 18.50 × 18.50
4. Step 4: Simplify right side
   12.38x = 342.25
5. Step 5: Solve for x
   x = 342.25/12.38
6. Step 6: Final answer
   x = 27.66