Finding the Third Proportional to 21,071 and 30,828

Step by Step Solution

1. Step 1: Write the proportion equation
   21,071 : 30,828 = 30,828 : x
2. Step 2: Convert to fraction form
   21,071/30,828 = 30,828/x
3. Step 3: Cross multiply
   21,071x = 30,828 × 30,828
4. Step 4: Simplify right side
   21,071x = 950,365,584
5. Step 5: Solve for x
   x = 950,365,584/21,071
6. Step 6: Final answer
   x = 45,103.01