Finding the Third Proportional to 321.38 and 483.56

Step by Step Solution

1. Step 1: Write the proportion equation
   321.38 : 483.56 = 483.56 : x
2. Step 2: Convert to fraction form
   321.38/483.56 = 483.56/x
3. Step 3: Cross multiply
   321.38x = 483.56 × 483.56
4. Step 4: Simplify right side
   321.38x = 233,832.69
5. Step 5: Solve for x
   x = 233,832.69/321.38
6. Step 6: Final answer
   x = 727.60