Finding the Third Proportional to 2,485.69 and 3,512.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.69 : 3,512.53 = 3,512.53 : x
2. Step 2: Convert to fraction form
   2,485.69/3,512.53 = 3,512.53/x
3. Step 3: Cross multiply
   2,485.69x = 3,512.53 × 3,512.53
4. Step 4: Simplify right side
   2,485.69x = 12,337,875.78
5. Step 5: Solve for x
   x = 12,337,875.78/2,485.69
6. Step 6: Final answer
   x = 4,963.57