Finding the Third Proportional to 2,021,328 and 4,378,788

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,328 : 4,378,788 = 4,378,788 : x
2. Step 2: Convert to fraction form
   2,021,328/4,378,788 = 4,378,788/x
3. Step 3: Cross multiply
   2,021,328x = 4,378,788 × 4,378,788
4. Step 4: Simplify right side
   2,021,328x = 19,173,784,348,944
5. Step 5: Solve for x
   x = 19,173,784,348,944/2,021,328
6. Step 6: Final answer
   x = 9,485,736.28