Finding the Third Proportional to 3,986,372 and 8,504,248

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986,372 : 8,504,248 = 8,504,248 : x
2. Step 2: Convert to fraction form
   3,986,372/8,504,248 = 8,504,248/x
3. Step 3: Cross multiply
   3,986,372x = 8,504,248 × 8,504,248
4. Step 4: Simplify right side
   3,986,372x = 72,322,234,045,504
5. Step 5: Solve for x
   x = 72,322,234,045,504/3,986,372
6. Step 6: Final answer
   x = 18,142,369.56