Finding the Third Proportional to 6.45 and 10.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6.45 : 10.15 = 10.15 : x
2. Step 2: Convert to fraction form
   6.45/10.15 = 10.15/x
3. Step 3: Cross multiply
   6.45x = 10.15 × 10.15
4. Step 4: Simplify right side
   6.45x = 102.94
5. Step 5: Solve for x
   x = 102.94/6.45
6. Step 6: Final answer
   x = 15.96