Finding the Third Proportional to 2,086,421 and 4,448,434

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086,421 : 4,448,434 = 4,448,434 : x
2. Step 2: Convert to fraction form
   2,086,421/4,448,434 = 4,448,434/x
3. Step 3: Cross multiply
   2,086,421x = 4,448,434 × 4,448,434
4. Step 4: Simplify right side
   2,086,421x = 19,788,565,052,356
5. Step 5: Solve for x
   x = 19,788,565,052,356/2,086,421
6. Step 6: Final answer
   x = 9,484,454.50