Finding the Third Proportional to 2,721.94 and 5,807.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.94 : 5,807.81 = 5,807.81 : x
2. Step 2: Convert to fraction form
   2,721.94/5,807.81 = 5,807.81/x
3. Step 3: Cross multiply
   2,721.94x = 5,807.81 × 5,807.81
4. Step 4: Simplify right side
   2,721.94x = 33,730,686.04
5. Step 5: Solve for x
   x = 33,730,686.04/2,721.94
6. Step 6: Final answer
   x = 12,392.16