Finding the Third Proportional to 287,787,564 and 632,957,868

Step by Step Solution

1. Step 1: Write the proportion equation
   287,787,564 : 632,957,868 = 632,957,868 : x
2. Step 2: Convert to fraction form
   287,787,564/632,957,868 = 632,957,868/x
3. Step 3: Cross multiply
   287,787,564x = 632,957,868 × 632,957,868
4. Step 4: Simplify right side
   287,787,564x = 400,635,662,663,105,408
5. Step 5: Solve for x
   x = 400,635,662,663,105,408/287,787,564
6. Step 6: Final answer
   x = 1,392,122,915.58