Finding the Third Proportional to 80.50 and 158.25

Step by Step Solution

1. Step 1: Write the proportion equation
   80.50 : 158.25 = 158.25 : x
2. Step 2: Convert to fraction form
   80.50/158.25 = 158.25/x
3. Step 3: Cross multiply
   80.50x = 158.25 × 158.25
4. Step 4: Simplify right side
   80.50x = 25,043.06
5. Step 5: Solve for x
   x = 25,043.06/80.50
6. Step 6: Final answer
   x = 311.09