Finding the Third Proportional to 1,239,911 and 2,628,616

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,911 : 2,628,616 = 2,628,616 : x
2. Step 2: Convert to fraction form
   1,239,911/2,628,616 = 2,628,616/x
3. Step 3: Cross multiply
   1,239,911x = 2,628,616 × 2,628,616
4. Step 4: Simplify right side
   1,239,911x = 6,909,622,075,456
5. Step 5: Solve for x
   x = 6,909,622,075,456/1,239,911
6. Step 6: Final answer
   x = 5,572,675.84