Finding the Third Proportional to 15.39 and 33.16

Step by Step Solution

1. Step 1: Write the proportion equation
   15.39 : 33.16 = 33.16 : x
2. Step 2: Convert to fraction form
   15.39/33.16 = 33.16/x
3. Step 3: Cross multiply
   15.39x = 33.16 × 33.16
4. Step 4: Simplify right side
   15.39x = 1,099.86
5. Step 5: Solve for x
   x = 1,099.86/15.39
6. Step 6: Final answer
   x = 71.48