Finding the Third Proportional to 267.26 and 620.89

Step by Step Solution

1. Step 1: Write the proportion equation
   267.26 : 620.89 = 620.89 : x
2. Step 2: Convert to fraction form
   267.26/620.89 = 620.89/x
3. Step 3: Cross multiply
   267.26x = 620.89 × 620.89
4. Step 4: Simplify right side
   267.26x = 385,510.02
5. Step 5: Solve for x
   x = 385,510.02/267.26
6. Step 6: Final answer
   x = 1,442.46