Finding the Third Proportional to 2,019,872 and 4,319,678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019,872 : 4,319,678 = 4,319,678 : x
2. Step 2: Convert to fraction form
   2,019,872/4,319,678 = 4,319,678/x
3. Step 3: Cross multiply
   2,019,872x = 4,319,678 × 4,319,678
4. Step 4: Simplify right side
   2,019,872x = 18,659,618,023,684
5. Step 5: Solve for x
   x = 18,659,618,023,684/2,019,872
6. Step 6: Final answer
   x = 9,238,020.04