Finding the Third Proportional to 9,870 and 14,379

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870 : 14,379 = 14,379 : x
2. Step 2: Convert to fraction form
   9,870/14,379 = 14,379/x
3. Step 3: Cross multiply
   9,870x = 14,379 × 14,379
4. Step 4: Simplify right side
   9,870x = 206,755,641
5. Step 5: Solve for x
   x = 206,755,641/9,870
6. Step 6: Final answer
   x = 20,947.89