Finding the Third Proportional to 1,243,638 and 2,719,260

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,638 : 2,719,260 = 2,719,260 : x
2. Step 2: Convert to fraction form
   1,243,638/2,719,260 = 2,719,260/x
3. Step 3: Cross multiply
   1,243,638x = 2,719,260 × 2,719,260
4. Step 4: Simplify right side
   1,243,638x = 7,394,374,947,600
5. Step 5: Solve for x
   x = 7,394,374,947,600/1,243,638
6. Step 6: Final answer
   x = 5,945,761.51