Finding the Third Proportional to 19,510,986 and 42,018,702

Step by Step Solution

1. Step 1: Write the proportion equation
   19,510,986 : 42,018,702 = 42,018,702 : x
2. Step 2: Convert to fraction form
   19,510,986/42,018,702 = 42,018,702/x
3. Step 3: Cross multiply
   19,510,986x = 42,018,702 × 42,018,702
4. Step 4: Simplify right side
   19,510,986x = 1,765,571,317,764,804
5. Step 5: Solve for x
   x = 1,765,571,317,764,804/19,510,986
6. Step 6: Final answer
   x = 90,491,137.55