Finding the Third Proportional to 8,520.19 and 10,957.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,520.19 : 10,957.78 = 10,957.78 : x
2. Step 2: Convert to fraction form
   8,520.19/10,957.78 = 10,957.78/x
3. Step 3: Cross multiply
   8,520.19x = 10,957.78 × 10,957.78
4. Step 4: Simplify right side
   8,520.19x = 120,072,969.92
5. Step 5: Solve for x
   x = 120,072,969.92/8,520.19
6. Step 6: Final answer
   x = 14,092.76