Finding the Third Proportional to 21,404.25 and 28,404

Step by Step Solution

1. Step 1: Write the proportion equation
   21,404.25 : 28,404 = 28,404 : x
2. Step 2: Convert to fraction form
   21,404.25/28,404 = 28,404/x
3. Step 3: Cross multiply
   21,404.25x = 28,404 × 28,404
4. Step 4: Simplify right side
   21,404.25x = 806,787,216
5. Step 5: Solve for x
   x = 806,787,216/21,404.25
6. Step 6: Final answer
   x = 37,692.85