Finding the Third Proportional to 11,142 and 16,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142 : 16,715.25 = 16,715.25 : x
2. Step 2: Convert to fraction form
   11,142/16,715.25 = 16,715.25/x
3. Step 3: Cross multiply
   11,142x = 16,715.25 × 16,715.25
4. Step 4: Simplify right side
   11,142x = 279,399,582.56
5. Step 5: Solve for x
   x = 279,399,582.56/11,142
6. Step 6: Final answer
   x = 25,076.25