Finding the Third Proportional to 3,861,984 and 8,485,248

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861,984 : 8,485,248 = 8,485,248 : x
2. Step 2: Convert to fraction form
   3,861,984/8,485,248 = 8,485,248/x
3. Step 3: Cross multiply
   3,861,984x = 8,485,248 × 8,485,248
4. Step 4: Simplify right side
   3,861,984x = 71,999,433,621,504
5. Step 5: Solve for x
   x = 71,999,433,621,504/3,861,984
6. Step 6: Final answer
   x = 18,643,120.64