Finding the Third Proportional to 1,628,609 and 3,578,437

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628,609 : 3,578,437 = 3,578,437 : x
2. Step 2: Convert to fraction form
   1,628,609/3,578,437 = 3,578,437/x
3. Step 3: Cross multiply
   1,628,609x = 3,578,437 × 3,578,437
4. Step 4: Simplify right side
   1,628,609x = 12,805,211,362,969
5. Step 5: Solve for x
   x = 12,805,211,362,969/1,628,609
6. Step 6: Final answer
   x = 7,862,667.69