Finding the Third Proportional to 2,485.69 and 3,148.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.69 : 3,148.03 = 3,148.03 : x
2. Step 2: Convert to fraction form
   2,485.69/3,148.03 = 3,148.03/x
3. Step 3: Cross multiply
   2,485.69x = 3,148.03 × 3,148.03
4. Step 4: Simplify right side
   2,485.69x = 9,910,100.75
5. Step 5: Solve for x
   x = 9,910,100.75/2,485.69
6. Step 6: Final answer
   x = 3,986.87