Finding the Third Proportional to 6.31 and 10.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6.31 : 10.31 = 10.31 : x
2. Step 2: Convert to fraction form
   6.31/10.31 = 10.31/x
3. Step 3: Cross multiply
   6.31x = 10.31 × 10.31
4. Step 4: Simplify right side
   6.31x = 106.35
5. Step 5: Solve for x
   x = 106.35/6.31
6. Step 6: Final answer
   x = 16.85