Finding the Third Proportional to 16,509 and 22,131

Step by Step Solution

1. Step 1: Write the proportion equation
   16,509 : 22,131 = 22,131 : x
2. Step 2: Convert to fraction form
   16,509/22,131 = 22,131/x
3. Step 3: Cross multiply
   16,509x = 22,131 × 22,131
4. Step 4: Simplify right side
   16,509x = 489,781,161
5. Step 5: Solve for x
   x = 489,781,161/16,509
6. Step 6: Final answer
   x = 29,667.52