Finding the Third Proportional to 479,221,464 and 684,819,936

Step by Step Solution

1. Step 1: Write the proportion equation
   479,221,464 : 684,819,936 = 684,819,936 : x
2. Step 2: Convert to fraction form
   479,221,464/684,819,936 = 684,819,936/x
3. Step 3: Cross multiply
   479,221,464x = 684,819,936 × 684,819,936
4. Step 4: Simplify right side
   479,221,464x = 468,978,344,743,044,096
5. Step 5: Solve for x
   x = 468,978,344,743,044,096/479,221,464
6. Step 6: Final answer
   x = 978,625,499.84