Finding the Third Proportional to 3,936,384 and 8,525,664

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936,384 : 8,525,664 = 8,525,664 : x
2. Step 2: Convert to fraction form
   3,936,384/8,525,664 = 8,525,664/x
3. Step 3: Cross multiply
   3,936,384x = 8,525,664 × 8,525,664
4. Step 4: Simplify right side
   3,936,384x = 72,686,946,640,896
5. Step 5: Solve for x
   x = 72,686,946,640,896/3,936,384
6. Step 6: Final answer
   x = 18,465,410.55