Finding the Third Proportional to 9,879 and 10,959

Step by Step Solution

1. Step 1: Write the proportion equation
   9,879 : 10,959 = 10,959 : x
2. Step 2: Convert to fraction form
   9,879/10,959 = 10,959/x
3. Step 3: Cross multiply
   9,879x = 10,959 × 10,959
4. Step 4: Simplify right side
   9,879x = 120,099,681
5. Step 5: Solve for x
   x = 120,099,681/9,879
6. Step 6: Final answer
   x = 12,157.07