Finding the Third Proportional to 8,473.25 and 12,587.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,473.25 : 12,587.25 = 12,587.25 : x
2. Step 2: Convert to fraction form
   8,473.25/12,587.25 = 12,587.25/x
3. Step 3: Cross multiply
   8,473.25x = 12,587.25 × 12,587.25
4. Step 4: Simplify right side
   8,473.25x = 158,438,862.56
5. Step 5: Solve for x
   x = 158,438,862.56/8,473.25
6. Step 6: Final answer
   x = 18,698.71