Finding the Third Proportional to 1,297,638 and 2,066,369

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297,638 : 2,066,369 = 2,066,369 : x
2. Step 2: Convert to fraction form
   1,297,638/2,066,369 = 2,066,369/x
3. Step 3: Cross multiply
   1,297,638x = 2,066,369 × 2,066,369
4. Step 4: Simplify right side
   1,297,638x = 4,269,880,844,161
5. Step 5: Solve for x
   x = 4,269,880,844,161/1,297,638
6. Step 6: Final answer
   x = 3,290,502.32