Finding the Third Proportional to 2,113.25 and 4,509.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.25 : 4,509.25 = 4,509.25 : x
2. Step 2: Convert to fraction form
   2,113.25/4,509.25 = 4,509.25/x
3. Step 3: Cross multiply
   2,113.25x = 4,509.25 × 4,509.25
4. Step 4: Simplify right side
   2,113.25x = 20,333,335.56
5. Step 5: Solve for x
   x = 20,333,335.56/2,113.25
6. Step 6: Final answer
   x = 9,621.83