Finding the Third Proportional to 8,761 and 13,871

Step by Step Solution

1. Step 1: Write the proportion equation
   8,761 : 13,871 = 13,871 : x
2. Step 2: Convert to fraction form
   8,761/13,871 = 13,871/x
3. Step 3: Cross multiply
   8,761x = 13,871 × 13,871
4. Step 4: Simplify right side
   8,761x = 192,404,641
5. Step 5: Solve for x
   x = 192,404,641/8,761
6. Step 6: Final answer
   x = 21,961.49