Finding the Third Proportional to 2,108,909 and 4,538,215

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108,909 : 4,538,215 = 4,538,215 : x
2. Step 2: Convert to fraction form
   2,108,909/4,538,215 = 4,538,215/x
3. Step 3: Cross multiply
   2,108,909x = 4,538,215 × 4,538,215
4. Step 4: Simplify right side
   2,108,909x = 20,595,395,386,225
5. Step 5: Solve for x
   x = 20,595,395,386,225/2,108,909
6. Step 6: Final answer
   x = 9,765,900.47