Finding the Third Proportional to 81.56 and 136.27

Step by Step Solution

1. Step 1: Write the proportion equation
   81.56 : 136.27 = 136.27 : x
2. Step 2: Convert to fraction form
   81.56/136.27 = 136.27/x
3. Step 3: Cross multiply
   81.56x = 136.27 × 136.27
4. Step 4: Simplify right side
   81.56x = 18,568.32
5. Step 5: Solve for x
   x = 18,568.32/81.56
6. Step 6: Final answer
   x = 227.66