Finding the Third Proportional to 12,040 and 15,936

Step by Step Solution

1. Step 1: Write the proportion equation
   12,040 : 15,936 = 15,936 : x
2. Step 2: Convert to fraction form
   12,040/15,936 = 15,936/x
3. Step 3: Cross multiply
   12,040x = 15,936 × 15,936
4. Step 4: Simplify right side
   12,040x = 253,956,096
5. Step 5: Solve for x
   x = 253,956,096/12,040
6. Step 6: Final answer
   x = 21,092.70