Finding the Third Proportional to 720,456 and 1,667,868

Step by Step Solution

1. Step 1: Write the proportion equation
   720,456 : 1,667,868 = 1,667,868 : x
2. Step 2: Convert to fraction form
   720,456/1,667,868 = 1,667,868/x
3. Step 3: Cross multiply
   720,456x = 1,667,868 × 1,667,868
4. Step 4: Simplify right side
   720,456x = 2,781,783,665,424
5. Step 5: Solve for x
   x = 2,781,783,665,424/720,456
6. Step 6: Final answer
   x = 3,861,143.03