Finding the Third Proportional to 2,442,644 and 5,209,909

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442,644 : 5,209,909 = 5,209,909 : x
2. Step 2: Convert to fraction form
   2,442,644/5,209,909 = 5,209,909/x
3. Step 3: Cross multiply
   2,442,644x = 5,209,909 × 5,209,909
4. Step 4: Simplify right side
   2,442,644x = 27,143,151,788,281
5. Step 5: Solve for x
   x = 27,143,151,788,281/2,442,644
6. Step 6: Final answer
   x = 11,112,201.28