Finding the Third Proportional to 21,180 and 28,764

Step by Step Solution

1. Step 1: Write the proportion equation
   21,180 : 28,764 = 28,764 : x
2. Step 2: Convert to fraction form
   21,180/28,764 = 28,764/x
3. Step 3: Cross multiply
   21,180x = 28,764 × 28,764
4. Step 4: Simplify right side
   21,180x = 827,367,696
5. Step 5: Solve for x
   x = 827,367,696/21,180
6. Step 6: Final answer
   x = 39,063.63