Finding the Third Proportional to 685,373 and 1,485,148

Step by Step Solution

1. Step 1: Write the proportion equation
   685,373 : 1,485,148 = 1,485,148 : x
2. Step 2: Convert to fraction form
   685,373/1,485,148 = 1,485,148/x
3. Step 3: Cross multiply
   685,373x = 1,485,148 × 1,485,148
4. Step 4: Simplify right side
   685,373x = 2,205,664,581,904
5. Step 5: Solve for x
   x = 2,205,664,581,904/685,373
6. Step 6: Final answer
   x = 3,218,195.90