Finding the Third Proportional to 4,039,074 and 8,645,538

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,074 : 8,645,538 = 8,645,538 : x
2. Step 2: Convert to fraction form
   4,039,074/8,645,538 = 8,645,538/x
3. Step 3: Cross multiply
   4,039,074x = 8,645,538 × 8,645,538
4. Step 4: Simplify right side
   4,039,074x = 74,745,327,309,444
5. Step 5: Solve for x
   x = 74,745,327,309,444/4,039,074
6. Step 6: Final answer
   x = 18,505,560.26