Finding the Third Proportional to 2,619,643 and 3,913,288

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619,643 : 3,913,288 = 3,913,288 : x
2. Step 2: Convert to fraction form
   2,619,643/3,913,288 = 3,913,288/x
3. Step 3: Cross multiply
   2,619,643x = 3,913,288 × 3,913,288
4. Step 4: Simplify right side
   2,619,643x = 15,313,822,970,944
5. Step 5: Solve for x
   x = 15,313,822,970,944/2,619,643
6. Step 6: Final answer
   x = 5,845,767.14