Finding the Third Proportional to 1,243,728 and 2,748,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,728 : 2,748,816 = 2,748,816 : x
2. Step 2: Convert to fraction form
   1,243,728/2,748,816 = 2,748,816/x
3. Step 3: Cross multiply
   1,243,728x = 2,748,816 × 2,748,816
4. Step 4: Simplify right side
   1,243,728x = 7,555,989,401,856
5. Step 5: Solve for x
   x = 7,555,989,401,856/1,243,728
6. Step 6: Final answer
   x = 6,075,274.82