Finding the Third Proportional to 15.91 and 43.27

Step by Step Solution

1. Step 1: Write the proportion equation
   15.91 : 43.27 = 43.27 : x
2. Step 2: Convert to fraction form
   15.91/43.27 = 43.27/x
3. Step 3: Cross multiply
   15.91x = 43.27 × 43.27
4. Step 4: Simplify right side
   15.91x = 1,871.91
5. Step 5: Solve for x
   x = 1,871.91/15.91
6. Step 6: Final answer
   x = 117.63