Finding the Third Proportional to 8,551.69 and 12,792.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,551.69 : 12,792.94 = 12,792.94 : x
2. Step 2: Convert to fraction form
   8,551.69/12,792.94 = 12,792.94/x
3. Step 3: Cross multiply
   8,551.69x = 12,792.94 × 12,792.94
4. Step 4: Simplify right side
   8,551.69x = 163,659,249.88
5. Step 5: Solve for x
   x = 163,659,249.88/8,551.69
6. Step 6: Final answer
   x = 19,137.66