Finding the Third Proportional to 9,870 and 12,825

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870 : 12,825 = 12,825 : x
2. Step 2: Convert to fraction form
   9,870/12,825 = 12,825/x
3. Step 3: Cross multiply
   9,870x = 12,825 × 12,825
4. Step 4: Simplify right side
   9,870x = 164,480,625
5. Step 5: Solve for x
   x = 164,480,625/9,870
6. Step 6: Final answer
   x = 16,664.70