Finding the Third Proportional to 685,844 and 1,485,736

Step by Step Solution

1. Step 1: Write the proportion equation
   685,844 : 1,485,736 = 1,485,736 : x
2. Step 2: Convert to fraction form
   685,844/1,485,736 = 1,485,736/x
3. Step 3: Cross multiply
   685,844x = 1,485,736 × 1,485,736
4. Step 4: Simplify right side
   685,844x = 2,207,411,461,696
5. Step 5: Solve for x
   x = 2,207,411,461,696/685,844
6. Step 6: Final answer
   x = 3,218,532.88