Finding the Third Proportional to 2,021,488 and 4,399,328

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,488 : 4,399,328 = 4,399,328 : x
2. Step 2: Convert to fraction form
   2,021,488/4,399,328 = 4,399,328/x
3. Step 3: Cross multiply
   2,021,488x = 4,399,328 × 4,399,328
4. Step 4: Simplify right side
   2,021,488x = 19,354,086,851,584
5. Step 5: Solve for x
   x = 19,354,086,851,584/2,021,488
6. Step 6: Final answer
   x = 9,574,178.45