Finding the Third Proportional to 316.50 and 548.25

Step by Step Solution

1. Step 1: Write the proportion equation
   316.50 : 548.25 = 548.25 : x
2. Step 2: Convert to fraction form
   316.50/548.25 = 548.25/x
3. Step 3: Cross multiply
   316.50x = 548.25 × 548.25
4. Step 4: Simplify right side
   316.50x = 300,578.06
5. Step 5: Solve for x
   x = 300,578.06/316.50
6. Step 6: Final answer
   x = 949.69