Finding the Third Proportional to 1,209,728 and 2,562,664

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,728 : 2,562,664 = 2,562,664 : x
2. Step 2: Convert to fraction form
   1,209,728/2,562,664 = 2,562,664/x
3. Step 3: Cross multiply
   1,209,728x = 2,562,664 × 2,562,664
4. Step 4: Simplify right side
   1,209,728x = 6,567,246,776,896
5. Step 5: Solve for x
   x = 6,567,246,776,896/1,209,728
6. Step 6: Final answer
   x = 5,428,697.01