Finding the Third Proportional to 12,102 and 16,111

Step by Step Solution

1. Step 1: Write the proportion equation
   12,102 : 16,111 = 16,111 : x
2. Step 2: Convert to fraction form
   12,102/16,111 = 16,111/x
3. Step 3: Cross multiply
   12,102x = 16,111 × 16,111
4. Step 4: Simplify right side
   12,102x = 259,564,321
5. Step 5: Solve for x
   x = 259,564,321/12,102
6. Step 6: Final answer
   x = 21,448.05