Finding the Third Proportional to 9,078 and 13,881

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078 : 13,881 = 13,881 : x
2. Step 2: Convert to fraction form
   9,078/13,881 = 13,881/x
3. Step 3: Cross multiply
   9,078x = 13,881 × 13,881
4. Step 4: Simplify right side
   9,078x = 192,682,161
5. Step 5: Solve for x
   x = 192,682,161/9,078
6. Step 6: Final answer
   x = 21,225.18