Finding the Third Proportional to 2,138.48 and 3,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138.48 : 3,042.56 = 3,042.56 : x
2. Step 2: Convert to fraction form
   2,138.48/3,042.56 = 3,042.56/x
3. Step 3: Cross multiply
   2,138.48x = 3,042.56 × 3,042.56
4. Step 4: Simplify right side
   2,138.48x = 9,257,186.57
5. Step 5: Solve for x
   x = 9,257,186.57/2,138.48
6. Step 6: Final answer
   x = 4,328.85