Finding the Third Proportional to 2,492 and 5,287.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,492 : 5,287.75 = 5,287.75 : x
2. Step 2: Convert to fraction form
   2,492/5,287.75 = 5,287.75/x
3. Step 3: Cross multiply
   2,492x = 5,287.75 × 5,287.75
4. Step 4: Simplify right side
   2,492x = 27,960,300.06
5. Step 5: Solve for x
   x = 27,960,300.06/2,492
6. Step 6: Final answer
   x = 11,220.02