Finding the Third Proportional to 2,086,418 and 4,448,428

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086,418 : 4,448,428 = 4,448,428 : x
2. Step 2: Convert to fraction form
   2,086,418/4,448,428 = 4,448,428/x
3. Step 3: Cross multiply
   2,086,418x = 4,448,428 × 4,448,428
4. Step 4: Simplify right side
   2,086,418x = 19,788,511,671,184
5. Step 5: Solve for x
   x = 19,788,511,671,184/2,086,418
6. Step 6: Final answer
   x = 9,484,442.56