Finding the Third Proportional to 19,510,956 and 42,018,642

Step by Step Solution

1. Step 1: Write the proportion equation
   19,510,956 : 42,018,642 = 42,018,642 : x
2. Step 2: Convert to fraction form
   19,510,956/42,018,642 = 42,018,642/x
3. Step 3: Cross multiply
   19,510,956x = 42,018,642 × 42,018,642
4. Step 4: Simplify right side
   19,510,956x = 1,765,566,275,524,164
5. Step 5: Solve for x
   x = 1,765,566,275,524,164/19,510,956
6. Step 6: Final answer
   x = 90,491,018.25