Finding the Third Proportional to 6.69 and 15.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6.69 : 15.31 = 15.31 : x
2. Step 2: Convert to fraction form
   6.69/15.31 = 15.31/x
3. Step 3: Cross multiply
   6.69x = 15.31 × 15.31
4. Step 4: Simplify right side
   6.69x = 234.47
5. Step 5: Solve for x
   x = 234.47/6.69
6. Step 6: Final answer
   x = 35.06