Finding the Third Proportional to 19,456,740 and 42,236,424

Step by Step Solution

1. Step 1: Write the proportion equation
   19,456,740 : 42,236,424 = 42,236,424 : x
2. Step 2: Convert to fraction form
   19,456,740/42,236,424 = 42,236,424/x
3. Step 3: Cross multiply
   19,456,740x = 42,236,424 × 42,236,424
4. Step 4: Simplify right side
   19,456,740x = 1,783,915,512,307,776
5. Step 5: Solve for x
   x = 1,783,915,512,307,776/19,456,740
6. Step 6: Final answer
   x = 91,686,249.20