Finding the Third Proportional to 3,978,045 and 8,589,955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,045 : 8,589,955.50 = 8,589,955.50 : x
2. Step 2: Convert to fraction form
   3,978,045/8,589,955.50 = 8,589,955.50/x
3. Step 3: Cross multiply
   3,978,045x = 8,589,955.50 × 8,589,955.50
4. Step 4: Simplify right side
   3,978,045x = 73,787,335,491,980.25
5. Step 5: Solve for x
   x = 73,787,335,491,980.25/3,978,045
6. Step 6: Final answer
   x = 18,548,642.74