Finding the Third Proportional to 670,353 and 1,428,405

Step by Step Solution

1. Step 1: Write the proportion equation
   670,353 : 1,428,405 = 1,428,405 : x
2. Step 2: Convert to fraction form
   670,353/1,428,405 = 1,428,405/x
3. Step 3: Cross multiply
   670,353x = 1,428,405 × 1,428,405
4. Step 4: Simplify right side
   670,353x = 2,040,340,844,025
5. Step 5: Solve for x
   x = 2,040,340,844,025/670,353
6. Step 6: Final answer
   x = 3,043,681.23