Finding the Third Proportional to 11.71 and 20.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11.71 : 20.10 = 20.10 : x
2. Step 2: Convert to fraction form
   11.71/20.10 = 20.10/x
3. Step 3: Cross multiply
   11.71x = 20.10 × 20.10
4. Step 4: Simplify right side
   11.71x = 404.15
5. Step 5: Solve for x
   x = 404.15/11.71
6. Step 6: Final answer
   x = 34.52