Finding the Third Proportional to 16,040.53 and 21,287.81

Step by Step Solution

1. Step 1: Write the proportion equation
   16,040.53 : 21,287.81 = 21,287.81 : x
2. Step 2: Convert to fraction form
   16,040.53/21,287.81 = 21,287.81/x
3. Step 3: Cross multiply
   16,040.53x = 21,287.81 × 21,287.81
4. Step 4: Simplify right side
   16,040.53x = 453,170,961.04
5. Step 5: Solve for x
   x = 453,170,961.04/16,040.53
6. Step 6: Final answer
   x = 28,251.62