Finding the Third Proportional to 635,664 and 1,392,720

Step by Step Solution

1. Step 1: Write the proportion equation
   635,664 : 1,392,720 = 1,392,720 : x
2. Step 2: Convert to fraction form
   635,664/1,392,720 = 1,392,720/x
3. Step 3: Cross multiply
   635,664x = 1,392,720 × 1,392,720
4. Step 4: Simplify right side
   635,664x = 1,939,668,998,400
5. Step 5: Solve for x
   x = 1,939,668,998,400/635,664
6. Step 6: Final answer
   x = 3,051,406.09