Finding the Third Proportional to 2,208.50 and 4,821.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.50 : 4,821.50 = 4,821.50 : x
2. Step 2: Convert to fraction form
   2,208.50/4,821.50 = 4,821.50/x
3. Step 3: Cross multiply
   2,208.50x = 4,821.50 × 4,821.50
4. Step 4: Simplify right side
   2,208.50x = 23,246,862.25
5. Step 5: Solve for x
   x = 23,246,862.25/2,208.50
6. Step 6: Final answer
   x = 10,526.09