Finding the Third Proportional to 9,059 and 13,680

Step by Step Solution

1. Step 1: Write the proportion equation
   9,059 : 13,680 = 13,680 : x
2. Step 2: Convert to fraction form
   9,059/13,680 = 13,680/x
3. Step 3: Cross multiply
   9,059x = 13,680 × 13,680
4. Step 4: Simplify right side
   9,059x = 187,142,400
5. Step 5: Solve for x
   x = 187,142,400/9,059
6. Step 6: Final answer
   x = 20,658.17