Finding the Third Proportional to 2,198,406 and 4,821,900

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198,406 : 4,821,900 = 4,821,900 : x
2. Step 2: Convert to fraction form
   2,198,406/4,821,900 = 4,821,900/x
3. Step 3: Cross multiply
   2,198,406x = 4,821,900 × 4,821,900
4. Step 4: Simplify right side
   2,198,406x = 23,250,719,610,000
5. Step 5: Solve for x
   x = 23,250,719,610,000/2,198,406
6. Step 6: Final answer
   x = 10,576,171.83