Finding the Third Proportional to 720,414 and 1,667,628

Step by Step Solution

1. Step 1: Write the proportion equation
   720,414 : 1,667,628 = 1,667,628 : x
2. Step 2: Convert to fraction form
   720,414/1,667,628 = 1,667,628/x
3. Step 3: Cross multiply
   720,414x = 1,667,628 × 1,667,628
4. Step 4: Simplify right side
   720,414x = 2,780,983,146,384
5. Step 5: Solve for x
   x = 2,780,983,146,384/720,414
6. Step 6: Final answer
   x = 3,860,256.94