Finding the Third Proportional to 151.59 and 328.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151.59 : 328.78 = 328.78 : x
2. Step 2: Convert to fraction form
   151.59/328.78 = 328.78/x
3. Step 3: Cross multiply
   151.59x = 328.78 × 328.78
4. Step 4: Simplify right side
   151.59x = 108,097.11
5. Step 5: Solve for x
   x = 108,097.11/151.59
6. Step 6: Final answer
   x = 713.07