Finding the Third Proportional to 3,986,368 and 8,504,240

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986,368 : 8,504,240 = 8,504,240 : x
2. Step 2: Convert to fraction form
   3,986,368/8,504,240 = 8,504,240/x
3. Step 3: Cross multiply
   3,986,368x = 8,504,240 × 8,504,240
4. Step 4: Simplify right side
   3,986,368x = 72,322,097,977,600
5. Step 5: Solve for x
   x = 72,322,097,977,600/3,986,368
6. Step 6: Final answer
   x = 18,142,353.64