Finding the Third Proportional to 80.81 and 179.56

Step by Step Solution

1. Step 1: Write the proportion equation
   80.81 : 179.56 = 179.56 : x
2. Step 2: Convert to fraction form
   80.81/179.56 = 179.56/x
3. Step 3: Cross multiply
   80.81x = 179.56 × 179.56
4. Step 4: Simplify right side
   80.81x = 32,242.69
5. Step 5: Solve for x
   x = 32,242.69/80.81
6. Step 6: Final answer
   x = 398.98