Finding the Third Proportional to 1,223.25 and 1,811.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.25 : 1,811.25 = 1,811.25 : x
2. Step 2: Convert to fraction form
   1,223.25/1,811.25 = 1,811.25/x
3. Step 3: Cross multiply
   1,223.25x = 1,811.25 × 1,811.25
4. Step 4: Simplify right side
   1,223.25x = 3,280,626.56
5. Step 5: Solve for x
   x = 3,280,626.56/1,223.25
6. Step 6: Final answer
   x = 2,681.89