Finding the Third Proportional to 80.91 and 164.06

Step by Step Solution

1. Step 1: Write the proportion equation
   80.91 : 164.06 = 164.06 : x
2. Step 2: Convert to fraction form
   80.91/164.06 = 164.06/x
3. Step 3: Cross multiply
   80.91x = 164.06 × 164.06
4. Step 4: Simplify right side
   80.91x = 26,916.50
5. Step 5: Solve for x
   x = 26,916.50/80.91
6. Step 6: Final answer
   x = 332.69