Finding the Third Proportional to 16,640 and 19,016

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640 : 19,016 = 19,016 : x
2. Step 2: Convert to fraction form
   16,640/19,016 = 19,016/x
3. Step 3: Cross multiply
   16,640x = 19,016 × 19,016
4. Step 4: Simplify right side
   16,640x = 361,608,256
5. Step 5: Solve for x
   x = 361,608,256/16,640
6. Step 6: Final answer
   x = 21,731.27