Finding the Third Proportional to 9,278 and 10,886

Step by Step Solution

1. Step 1: Write the proportion equation
   9,278 : 10,886 = 10,886 : x
2. Step 2: Convert to fraction form
   9,278/10,886 = 10,886/x
3. Step 3: Cross multiply
   9,278x = 10,886 × 10,886
4. Step 4: Simplify right side
   9,278x = 118,504,996
5. Step 5: Solve for x
   x = 118,504,996/9,278
6. Step 6: Final answer
   x = 12,772.69