Finding the Third Proportional to 3,978,059 and 8,589,985

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,059 : 8,589,985 = 8,589,985 : x
2. Step 2: Convert to fraction form
   3,978,059/8,589,985 = 8,589,985/x
3. Step 3: Cross multiply
   3,978,059x = 8,589,985 × 8,589,985
4. Step 4: Simplify right side
   3,978,059x = 73,787,842,300,225
5. Step 5: Solve for x
   x = 73,787,842,300,225/3,978,059
6. Step 6: Final answer
   x = 18,548,704.86