Finding the Third Proportional to 11.88 and 18.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11.88 : 18.69 = 18.69 : x
2. Step 2: Convert to fraction form
   11.88/18.69 = 18.69/x
3. Step 3: Cross multiply
   11.88x = 18.69 × 18.69
4. Step 4: Simplify right side
   11.88x = 349.22
5. Step 5: Solve for x
   x = 349.22/11.88
6. Step 6: Final answer
   x = 29.41