Finding the Third Proportional to 9,908 and 12,886

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908 : 12,886 = 12,886 : x
2. Step 2: Convert to fraction form
   9,908/12,886 = 12,886/x
3. Step 3: Cross multiply
   9,908x = 12,886 × 12,886
4. Step 4: Simplify right side
   9,908x = 166,048,996
5. Step 5: Solve for x
   x = 166,048,996/9,908
6. Step 6: Final answer
   x = 16,759.08