Finding the Third Proportional to 328.69 and 493.59

Step by Step Solution

1. Step 1: Write the proportion equation
   328.69 : 493.59 = 493.59 : x
2. Step 2: Convert to fraction form
   328.69/493.59 = 493.59/x
3. Step 3: Cross multiply
   328.69x = 493.59 × 493.59
4. Step 4: Simplify right side
   328.69x = 243,634.79
5. Step 5: Solve for x
   x = 243,634.79/328.69
6. Step 6: Final answer
   x = 741.24