Finding the Third Proportional to 1,936,289 and 4,208,405

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936,289 : 4,208,405 = 4,208,405 : x
2. Step 2: Convert to fraction form
   1,936,289/4,208,405 = 4,208,405/x
3. Step 3: Cross multiply
   1,936,289x = 4,208,405 × 4,208,405
4. Step 4: Simplify right side
   1,936,289x = 17,710,672,644,025
5. Step 5: Solve for x
   x = 17,710,672,644,025/1,936,289
6. Step 6: Final answer
   x = 9,146,709.32