Finding the Third Proportional to 622,406 and 1,267,636

Step by Step Solution

1. Step 1: Write the proportion equation
   622,406 : 1,267,636 = 1,267,636 : x
2. Step 2: Convert to fraction form
   622,406/1,267,636 = 1,267,636/x
3. Step 3: Cross multiply
   622,406x = 1,267,636 × 1,267,636
4. Step 4: Simplify right side
   622,406x = 1,606,901,028,496
5. Step 5: Solve for x
   x = 1,606,901,028,496/622,406
6. Step 6: Final answer
   x = 2,581,756.97