Finding the Third Proportional to 2,191,872 and 3,439,266

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191,872 : 3,439,266 = 3,439,266 : x
2. Step 2: Convert to fraction form
   2,191,872/3,439,266 = 3,439,266/x
3. Step 3: Cross multiply
   2,191,872x = 3,439,266 × 3,439,266
4. Step 4: Simplify right side
   2,191,872x = 11,828,550,618,756
5. Step 5: Solve for x
   x = 11,828,550,618,756/2,191,872
6. Step 6: Final answer
   x = 5,396,551.72