Finding the Third Proportional to 685,411.50 and 1,485,222

Step by Step Solution

1. Step 1: Write the proportion equation
   685,411.50 : 1,485,222 = 1,485,222 : x
2. Step 2: Convert to fraction form
   685,411.50/1,485,222 = 1,485,222/x
3. Step 3: Cross multiply
   685,411.50x = 1,485,222 × 1,485,222
4. Step 4: Simplify right side
   685,411.50x = 2,205,884,389,284
5. Step 5: Solve for x
   x = 2,205,884,389,284/685,411.50
6. Step 6: Final answer
   x = 3,218,335.83