Finding the Third Proportional to 69.47 and 108.42

Step by Step Solution

1. Step 1: Write the proportion equation
   69.47 : 108.42 = 108.42 : x
2. Step 2: Convert to fraction form
   69.47/108.42 = 108.42/x
3. Step 3: Cross multiply
   69.47x = 108.42 × 108.42
4. Step 4: Simplify right side
   69.47x = 11,754.59
5. Step 5: Solve for x
   x = 11,754.59/69.47
6. Step 6: Final answer
   x = 169.20