Finding the Third Proportional to 67.92 and 145.46

Step by Step Solution

1. Step 1: Write the proportion equation
   67.92 : 145.46 = 145.46 : x
2. Step 2: Convert to fraction form
   67.92/145.46 = 145.46/x
3. Step 3: Cross multiply
   67.92x = 145.46 × 145.46
4. Step 4: Simplify right side
   67.92x = 21,158.88
5. Step 5: Solve for x
   x = 21,158.88/67.92
6. Step 6: Final answer
   x = 311.52