Finding the Third Proportional to 2,561.63 and 3,963.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.63 : 3,963.94 = 3,963.94 : x
2. Step 2: Convert to fraction form
   2,561.63/3,963.94 = 3,963.94/x
3. Step 3: Cross multiply
   2,561.63x = 3,963.94 × 3,963.94
4. Step 4: Simplify right side
   2,561.63x = 15,712,800.50
5. Step 5: Solve for x
   x = 15,712,800.50/2,561.63
6. Step 6: Final answer
   x = 6,133.92