Finding the Third Proportional to 8,570.25 and 12,854.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570.25 : 12,854.25 = 12,854.25 : x
2. Step 2: Convert to fraction form
   8,570.25/12,854.25 = 12,854.25/x
3. Step 3: Cross multiply
   8,570.25x = 12,854.25 × 12,854.25
4. Step 4: Simplify right side
   8,570.25x = 165,231,743.06
5. Step 5: Solve for x
   x = 165,231,743.06/8,570.25
6. Step 6: Final answer
   x = 19,279.69