Finding the Third Proportional to 3,897,454 and 8,503,172

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897,454 : 8,503,172 = 8,503,172 : x
2. Step 2: Convert to fraction form
   3,897,454/8,503,172 = 8,503,172/x
3. Step 3: Cross multiply
   3,897,454x = 8,503,172 × 8,503,172
4. Step 4: Simplify right side
   3,897,454x = 72,303,934,061,584
5. Step 5: Solve for x
   x = 72,303,934,061,584/3,897,454
6. Step 6: Final answer
   x = 18,551,581.12