Finding the Third Proportional to 21,122 and 28,450

Step by Step Solution

1. Step 1: Write the proportion equation
   21,122 : 28,450 = 28,450 : x
2. Step 2: Convert to fraction form
   21,122/28,450 = 28,450/x
3. Step 3: Cross multiply
   21,122x = 28,450 × 28,450
4. Step 4: Simplify right side
   21,122x = 809,402,500
5. Step 5: Solve for x
   x = 809,402,500/21,122
6. Step 6: Final answer
   x = 38,320.35