Finding the Third Proportional to 2,120,434 and 4,419,716

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,434 : 4,419,716 = 4,419,716 : x
2. Step 2: Convert to fraction form
   2,120,434/4,419,716 = 4,419,716/x
3. Step 3: Cross multiply
   2,120,434x = 4,419,716 × 4,419,716
4. Step 4: Simplify right side
   2,120,434x = 19,533,889,520,656
5. Step 5: Solve for x
   x = 19,533,889,520,656/2,120,434
6. Step 6: Final answer
   x = 9,212,212.93