Finding the Third Proportional to 2,172,870 and 3,439,874

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,870 : 3,439,874 = 3,439,874 : x
2. Step 2: Convert to fraction form
   2,172,870/3,439,874 = 3,439,874/x
3. Step 3: Cross multiply
   2,172,870x = 3,439,874 × 3,439,874
4. Step 4: Simplify right side
   2,172,870x = 11,832,733,135,876
5. Step 5: Solve for x
   x = 11,832,733,135,876/2,172,870
6. Step 6: Final answer
   x = 5,445,670.08