Finding the Third Proportional to 81.56 and 116.81

Step by Step Solution

1. Step 1: Write the proportion equation
   81.56 : 116.81 = 116.81 : x
2. Step 2: Convert to fraction form
   81.56/116.81 = 116.81/x
3. Step 3: Cross multiply
   81.56x = 116.81 × 116.81
4. Step 4: Simplify right side
   81.56x = 13,645.16
5. Step 5: Solve for x
   x = 13,645.16/81.56
6. Step 6: Final answer
   x = 167.30