Finding the Third Proportional to 1,113,420 and 2,439,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113,420 : 2,439,640 = 2,439,640 : x
2. Step 2: Convert to fraction form
   1,113,420/2,439,640 = 2,439,640/x
3. Step 3: Cross multiply
   1,113,420x = 2,439,640 × 2,439,640
4. Step 4: Simplify right side
   1,113,420x = 5,951,843,329,600
5. Step 5: Solve for x
   x = 5,951,843,329,600/1,113,420
6. Step 6: Final answer
   x = 5,345,550.94