Finding the Third Proportional to 15,756 and 21,384

Step by Step Solution

1. Step 1: Write the proportion equation
   15,756 : 21,384 = 21,384 : x
2. Step 2: Convert to fraction form
   15,756/21,384 = 21,384/x
3. Step 3: Cross multiply
   15,756x = 21,384 × 21,384
4. Step 4: Simplify right side
   15,756x = 457,275,456
5. Step 5: Solve for x
   x = 457,275,456/15,756
6. Step 6: Final answer
   x = 29,022.31