Finding the Third Proportional to 491.25 and 667.88

Step by Step Solution

1. Step 1: Write the proportion equation
   491.25 : 667.88 = 667.88 : x
2. Step 2: Convert to fraction form
   491.25/667.88 = 667.88/x
3. Step 3: Cross multiply
   491.25x = 667.88 × 667.88
4. Step 4: Simplify right side
   491.25x = 446,057.02
5. Step 5: Solve for x
   x = 446,057.02/491.25
6. Step 6: Final answer
   x = 908.00