Finding the Third Proportional to 3,676,405 and 8,078,486

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676,405 : 8,078,486 = 8,078,486 : x
2. Step 2: Convert to fraction form
   3,676,405/8,078,486 = 8,078,486/x
3. Step 3: Cross multiply
   3,676,405x = 8,078,486 × 8,078,486
4. Step 4: Simplify right side
   3,676,405x = 65,261,936,052,196
5. Step 5: Solve for x
   x = 65,261,936,052,196/3,676,405
6. Step 6: Final answer
   x = 17,751,563.29