Finding the Third Proportional to 16,680 and 25,860

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680 : 25,860 = 25,860 : x
2. Step 2: Convert to fraction form
   16,680/25,860 = 25,860/x
3. Step 3: Cross multiply
   16,680x = 25,860 × 25,860
4. Step 4: Simplify right side
   16,680x = 668,739,600
5. Step 5: Solve for x
   x = 668,739,600/16,680
6. Step 6: Final answer
   x = 40,092.30