Finding the Third Proportional to 1,226,418 and 2,639,298

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226,418 : 2,639,298 = 2,639,298 : x
2. Step 2: Convert to fraction form
   1,226,418/2,639,298 = 2,639,298/x
3. Step 3: Cross multiply
   1,226,418x = 2,639,298 × 2,639,298
4. Step 4: Simplify right side
   1,226,418x = 6,965,893,932,804
5. Step 5: Solve for x
   x = 6,965,893,932,804/1,226,418
6. Step 6: Final answer
   x = 5,679,869.29