Finding the Third Proportional to 21,280 and 28,626

Step by Step Solution

1. Step 1: Write the proportion equation
   21,280 : 28,626 = 28,626 : x
2. Step 2: Convert to fraction form
   21,280/28,626 = 28,626/x
3. Step 3: Cross multiply
   21,280x = 28,626 × 28,626
4. Step 4: Simplify right side
   21,280x = 819,447,876
5. Step 5: Solve for x
   x = 819,447,876/21,280
6. Step 6: Final answer
   x = 38,507.89