Finding the Third Proportional to 15,944.25 and 21,429.75

Step by Step Solution

1. Step 1: Write the proportion equation
   15,944.25 : 21,429.75 = 21,429.75 : x
2. Step 2: Convert to fraction form
   15,944.25/21,429.75 = 21,429.75/x
3. Step 3: Cross multiply
   15,944.25x = 21,429.75 × 21,429.75
4. Step 4: Simplify right side
   15,944.25x = 459,234,185.06
5. Step 5: Solve for x
   x = 459,234,185.06/15,944.25
6. Step 6: Final answer
   x = 28,802.50