Finding the Third Proportional to 488.25 and 667.13

Step by Step Solution

1. Step 1: Write the proportion equation
   488.25 : 667.13 = 667.13 : x
2. Step 2: Convert to fraction form
   488.25/667.13 = 667.13/x
3. Step 3: Cross multiply
   488.25x = 667.13 × 667.13
4. Step 4: Simplify right side
   488.25x = 445,055.77
5. Step 5: Solve for x
   x = 445,055.77/488.25
6. Step 6: Final answer
   x = 911.53