Finding the Third Proportional to 623.25 and 885.38

Step by Step Solution

1. Step 1: Write the proportion equation
   623.25 : 885.38 = 885.38 : x
2. Step 2: Convert to fraction form
   623.25/885.38 = 885.38/x
3. Step 3: Cross multiply
   623.25x = 885.38 × 885.38
4. Step 4: Simplify right side
   623.25x = 783,888.89
5. Step 5: Solve for x
   x = 783,888.89/623.25
6. Step 6: Final answer
   x = 1,257.74