Finding the Third Proportional to 151.31 and 328.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151.31 : 328.31 = 328.31 : x
2. Step 2: Convert to fraction form
   151.31/328.31 = 328.31/x
3. Step 3: Cross multiply
   151.31x = 328.31 × 328.31
4. Step 4: Simplify right side
   151.31x = 107,789.10
5. Step 5: Solve for x
   x = 107,789.10/151.31
6. Step 6: Final answer
   x = 712.36