Finding the Third Proportional to 21,474 and 28,749

Step by Step Solution

1. Step 1: Write the proportion equation
   21,474 : 28,749 = 28,749 : x
2. Step 2: Convert to fraction form
   21,474/28,749 = 28,749/x
3. Step 3: Cross multiply
   21,474x = 28,749 × 28,749
4. Step 4: Simplify right side
   21,474x = 826,505,001
5. Step 5: Solve for x
   x = 826,505,001/21,474
6. Step 6: Final answer
   x = 38,488.64