Finding the Third Proportional to 11,392 and 17,680

Step by Step Solution

1. Step 1: Write the proportion equation
   11,392 : 17,680 = 17,680 : x
2. Step 2: Convert to fraction form
   11,392/17,680 = 17,680/x
3. Step 3: Cross multiply
   11,392x = 17,680 × 17,680
4. Step 4: Simplify right side
   11,392x = 312,582,400
5. Step 5: Solve for x
   x = 312,582,400/11,392
6. Step 6: Final answer
   x = 27,438.76