Finding the Third Proportional to 2,131.88 and 3,305.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.88 : 3,305.81 = 3,305.81 : x
2. Step 2: Convert to fraction form
   2,131.88/3,305.81 = 3,305.81/x
3. Step 3: Cross multiply
   2,131.88x = 3,305.81 × 3,305.81
4. Step 4: Simplify right side
   2,131.88x = 10,928,396.29
5. Step 5: Solve for x
   x = 10,928,396.29/2,131.88
6. Step 6: Final answer
   x = 5,126.19