Finding the Third Proportional to 1,339,288 and 2,021,007

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339,288 : 2,021,007 = 2,021,007 : x
2. Step 2: Convert to fraction form
   1,339,288/2,021,007 = 2,021,007/x
3. Step 3: Cross multiply
   1,339,288x = 2,021,007 × 2,021,007
4. Step 4: Simplify right side
   1,339,288x = 4,084,469,294,049
5. Step 5: Solve for x
   x = 4,084,469,294,049/1,339,288
6. Step 6: Final answer
   x = 3,049,731.87