Finding the Third Proportional to 91.13 and 179.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91.13 : 179.72 = 179.72 : x
2. Step 2: Convert to fraction form
   91.13/179.72 = 179.72/x
3. Step 3: Cross multiply
   91.13x = 179.72 × 179.72
4. Step 4: Simplify right side
   91.13x = 32,298.83
5. Step 5: Solve for x
   x = 32,298.83/91.13
6. Step 6: Final answer
   x = 354.45