Finding the Third Proportional to 478,128 and 1,040,379

Step by Step Solution

1. Step 1: Write the proportion equation
   478,128 : 1,040,379 = 1,040,379 : x
2. Step 2: Convert to fraction form
   478,128/1,040,379 = 1,040,379/x
3. Step 3: Cross multiply
   478,128x = 1,040,379 × 1,040,379
4. Step 4: Simplify right side
   478,128x = 1,082,388,463,641
5. Step 5: Solve for x
   x = 1,082,388,463,641/478,128
6. Step 6: Final answer
   x = 2,263,804.80