Finding the Third Proportional to 85.92 and 168.05

Step by Step Solution

1. Step 1: Write the proportion equation
   85.92 : 168.05 = 168.05 : x
2. Step 2: Convert to fraction form
   85.92/168.05 = 168.05/x
3. Step 3: Cross multiply
   85.92x = 168.05 × 168.05
4. Step 4: Simplify right side
   85.92x = 28,239.75
5. Step 5: Solve for x
   x = 28,239.75/85.92
6. Step 6: Final answer
   x = 328.67