Finding the Third Proportional to 13,543 and 18,111

Step by Step Solution

1. Step 1: Write the proportion equation
   13,543 : 18,111 = 18,111 : x
2. Step 2: Convert to fraction form
   13,543/18,111 = 18,111/x
3. Step 3: Cross multiply
   13,543x = 18,111 × 18,111
4. Step 4: Simplify right side
   13,543x = 328,008,321
5. Step 5: Solve for x
   x = 328,008,321/13,543
6. Step 6: Final answer
   x = 24,219.77