Finding the Third Proportional to 21,244 and 28,860

Step by Step Solution

1. Step 1: Write the proportion equation
   21,244 : 28,860 = 28,860 : x
2. Step 2: Convert to fraction form
   21,244/28,860 = 28,860/x
3. Step 3: Cross multiply
   21,244x = 28,860 × 28,860
4. Step 4: Simplify right side
   21,244x = 832,899,600
5. Step 5: Solve for x
   x = 832,899,600/21,244
6. Step 6: Final answer
   x = 39,206.35