Finding the Third Proportional to 13,912 and 17,680

Step by Step Solution

1. Step 1: Write the proportion equation
   13,912 : 17,680 = 17,680 : x
2. Step 2: Convert to fraction form
   13,912/17,680 = 17,680/x
3. Step 3: Cross multiply
   13,912x = 17,680 × 17,680
4. Step 4: Simplify right side
   13,912x = 312,582,400
5. Step 5: Solve for x
   x = 312,582,400/13,912
6. Step 6: Final answer
   x = 22,468.55