Finding the Third Proportional to 3,897,564 and 8,503,392

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897,564 : 8,503,392 = 8,503,392 : x
2. Step 2: Convert to fraction form
   3,897,564/8,503,392 = 8,503,392/x
3. Step 3: Cross multiply
   3,897,564x = 8,503,392 × 8,503,392
4. Step 4: Simplify right side
   3,897,564x = 72,307,675,505,664
5. Step 5: Solve for x
   x = 72,307,675,505,664/3,897,564
6. Step 6: Final answer
   x = 18,552,017.49