Finding the Third Proportional to 2,179,308 and 4,620,728

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179,308 : 4,620,728 = 4,620,728 : x
2. Step 2: Convert to fraction form
   2,179,308/4,620,728 = 4,620,728/x
3. Step 3: Cross multiply
   2,179,308x = 4,620,728 × 4,620,728
4. Step 4: Simplify right side
   2,179,308x = 21,351,127,249,984
5. Step 5: Solve for x
   x = 21,351,127,249,984/2,179,308
6. Step 6: Final answer
   x = 9,797,205.01