Finding the Third Proportional to 1,356,621 and 2,159,469

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356,621 : 2,159,469 = 2,159,469 : x
2. Step 2: Convert to fraction form
   1,356,621/2,159,469 = 2,159,469/x
3. Step 3: Cross multiply
   1,356,621x = 2,159,469 × 2,159,469
4. Step 4: Simplify right side
   1,356,621x = 4,663,306,361,961
5. Step 5: Solve for x
   x = 4,663,306,361,961/1,356,621
6. Step 6: Final answer
   x = 3,437,442.26