Finding the Third Proportional to 3,897,471 and 8,503,206

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897,471 : 8,503,206 = 8,503,206 : x
2. Step 2: Convert to fraction form
   3,897,471/8,503,206 = 8,503,206/x
3. Step 3: Cross multiply
   3,897,471x = 8,503,206 × 8,503,206
4. Step 4: Simplify right side
   3,897,471x = 72,304,512,278,436
5. Step 5: Solve for x
   x = 72,304,512,278,436/3,897,471
6. Step 6: Final answer
   x = 18,551,648.56