Finding the Third Proportional to 439,104 and 631,008

Step by Step Solution

1. Step 1: Write the proportion equation
   439,104 : 631,008 = 631,008 : x
2. Step 2: Convert to fraction form
   439,104/631,008 = 631,008/x
3. Step 3: Cross multiply
   439,104x = 631,008 × 631,008
4. Step 4: Simplify right side
   439,104x = 398,171,096,064
5. Step 5: Solve for x
   x = 398,171,096,064/439,104
6. Step 6: Final answer
   x = 906,780.84