Finding the Third Proportional to 2,542 and 3,900

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542 : 3,900 = 3,900 : x
2. Step 2: Convert to fraction form
   2,542/3,900 = 3,900/x
3. Step 3: Cross multiply
   2,542x = 3,900 × 3,900
4. Step 4: Simplify right side
   2,542x = 15,210,000
5. Step 5: Solve for x
   x = 15,210,000/2,542
6. Step 6: Final answer
   x = 5,983.48