Finding the Third Proportional to 8,884 and 12,878

Step by Step Solution

1. Step 1: Write the proportion equation
   8,884 : 12,878 = 12,878 : x
2. Step 2: Convert to fraction form
   8,884/12,878 = 12,878/x
3. Step 3: Cross multiply
   8,884x = 12,878 × 12,878
4. Step 4: Simplify right side
   8,884x = 165,842,884
5. Step 5: Solve for x
   x = 165,842,884/8,884
6. Step 6: Final answer
   x = 18,667.59