Finding the Third Proportional to 151.50 and 324.38

Step by Step Solution

1. Step 1: Write the proportion equation
   151.50 : 324.38 = 324.38 : x
2. Step 2: Convert to fraction form
   151.50/324.38 = 324.38/x
3. Step 3: Cross multiply
   151.50x = 324.38 × 324.38
4. Step 4: Simplify right side
   151.50x = 105,219.14
5. Step 5: Solve for x
   x = 105,219.14/151.50
6. Step 6: Final answer
   x = 694.52