Finding the Third Proportional to 19,878,976 and 42,591,104

Step by Step Solution

1. Step 1: Write the proportion equation
   19,878,976 : 42,591,104 = 42,591,104 : x
2. Step 2: Convert to fraction form
   19,878,976/42,591,104 = 42,591,104/x
3. Step 3: Cross multiply
   19,878,976x = 42,591,104 × 42,591,104
4. Step 4: Simplify right side
   19,878,976x = 1,814,002,139,938,816
5. Step 5: Solve for x
   x = 1,814,002,139,938,816/19,878,976
6. Step 6: Final answer
   x = 91,252,292.87