Finding the Third Proportional to 9,879 and 12,844.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,879 : 12,844.50 = 12,844.50 : x
2. Step 2: Convert to fraction form
   9,879/12,844.50 = 12,844.50/x
3. Step 3: Cross multiply
   9,879x = 12,844.50 × 12,844.50
4. Step 4: Simplify right side
   9,879x = 164,981,180.25
5. Step 5: Solve for x
   x = 164,981,180.25/9,879
6. Step 6: Final answer
   x = 16,700.19