Finding the Third Proportional to 3,997,665 and 5,697,486

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997,665 : 5,697,486 = 5,697,486 : x
2. Step 2: Convert to fraction form
   3,997,665/5,697,486 = 5,697,486/x
3. Step 3: Cross multiply
   3,997,665x = 5,697,486 × 5,697,486
4. Step 4: Simplify right side
   3,997,665x = 32,461,346,720,196
5. Step 5: Solve for x
   x = 32,461,346,720,196/3,997,665
6. Step 6: Final answer
   x = 8,120,076.77