Finding the Third Proportional to 1,105,326 and 1,621,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,326 : 1,621,728 = 1,621,728 : x
2. Step 2: Convert to fraction form
   1,105,326/1,621,728 = 1,621,728/x
3. Step 3: Cross multiply
   1,105,326x = 1,621,728 × 1,621,728
4. Step 4: Simplify right side
   1,105,326x = 2,630,001,705,984
5. Step 5: Solve for x
   x = 2,630,001,705,984/1,105,326
6. Step 6: Final answer
   x = 2,379,390.07