Finding the Third Proportional to 6,611 and 13,871

Step by Step Solution

1. Step 1: Write the proportion equation
   6,611 : 13,871 = 13,871 : x
2. Step 2: Convert to fraction form
   6,611/13,871 = 13,871/x
3. Step 3: Cross multiply
   6,611x = 13,871 × 13,871
4. Step 4: Simplify right side
   6,611x = 192,404,641
5. Step 5: Solve for x
   x = 192,404,641/6,611
6. Step 6: Final answer
   x = 29,103.71