Finding the Third Proportional to 3,977,896 and 8,536,441

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,896 : 8,536,441 = 8,536,441 : x
2. Step 2: Convert to fraction form
   3,977,896/8,536,441 = 8,536,441/x
3. Step 3: Cross multiply
   3,977,896x = 8,536,441 × 8,536,441
4. Step 4: Simplify right side
   3,977,896x = 72,870,824,946,481
5. Step 5: Solve for x
   x = 72,870,824,946,481/3,977,896
6. Step 6: Final answer
   x = 18,318,936.68