Finding the Third Proportional to 11,414 and 15,390

Step by Step Solution

1. Step 1: Write the proportion equation
   11,414 : 15,390 = 15,390 : x
2. Step 2: Convert to fraction form
   11,414/15,390 = 15,390/x
3. Step 3: Cross multiply
   11,414x = 15,390 × 15,390
4. Step 4: Simplify right side
   11,414x = 236,852,100
5. Step 5: Solve for x
   x = 236,852,100/11,414
6. Step 6: Final answer
   x = 20,751.02