Finding the Third Proportional to 622,136 and 1,285,744

Step by Step Solution

1. Step 1: Write the proportion equation
   622,136 : 1,285,744 = 1,285,744 : x
2. Step 2: Convert to fraction form
   622,136/1,285,744 = 1,285,744/x
3. Step 3: Cross multiply
   622,136x = 1,285,744 × 1,285,744
4. Step 4: Simplify right side
   622,136x = 1,653,137,633,536
5. Step 5: Solve for x
   x = 1,653,137,633,536/622,136
6. Step 6: Final answer
   x = 2,657,196.55