Finding the Third Proportional to 685,348.50 and 1,485,105

Step by Step Solution

1. Step 1: Write the proportion equation
   685,348.50 : 1,485,105 = 1,485,105 : x
2. Step 2: Convert to fraction form
   685,348.50/1,485,105 = 1,485,105/x
3. Step 3: Cross multiply
   685,348.50x = 1,485,105 × 1,485,105
4. Step 4: Simplify right side
   685,348.50x = 2,205,536,861,025
5. Step 5: Solve for x
   x = 2,205,536,861,025/685,348.50
6. Step 6: Final answer
   x = 3,218,124.59