Finding the Third Proportional to 2,361.38 and 5,515.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,361.38 : 5,515.31 = 5,515.31 : x
2. Step 2: Convert to fraction form
   2,361.38/5,515.31 = 5,515.31/x
3. Step 3: Cross multiply
   2,361.38x = 5,515.31 × 5,515.31
4. Step 4: Simplify right side
   2,361.38x = 30,418,671.97
5. Step 5: Solve for x
   x = 30,418,671.97/2,361.38
6. Step 6: Final answer
   x = 12,881.76