Finding the Third Proportional to 15,574.78 and 21,034.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,574.78 : 21,034.69 = 21,034.69 : x
2. Step 2: Convert to fraction form
   15,574.78/21,034.69 = 21,034.69/x
3. Step 3: Cross multiply
   15,574.78x = 21,034.69 × 21,034.69
4. Step 4: Simplify right side
   15,574.78x = 442,458,078.22
5. Step 5: Solve for x
   x = 442,458,078.22/15,574.78
6. Step 6: Final answer
   x = 28,408.62