Finding the Third Proportional to 316.72 and 481.25

Step by Step Solution

1. Step 1: Write the proportion equation
   316.72 : 481.25 = 481.25 : x
2. Step 2: Convert to fraction form
   316.72/481.25 = 481.25/x
3. Step 3: Cross multiply
   316.72x = 481.25 × 481.25
4. Step 4: Simplify right side
   316.72x = 231,605.32
5. Step 5: Solve for x
   x = 231,605.32/316.72
6. Step 6: Final answer
   x = 731.26