Finding the Third Proportional to 42,568,448 and 64,915,512

Step by Step Solution

1. Step 1: Write the proportion equation
   42,568,448 : 64,915,512 = 64,915,512 : x
2. Step 2: Convert to fraction form
   42,568,448/64,915,512 = 64,915,512/x
3. Step 3: Cross multiply
   42,568,448x = 64,915,512 × 64,915,512
4. Step 4: Simplify right side
   42,568,448x = 4,214,023,698,222,144
5. Step 5: Solve for x
   x = 4,214,023,698,222,144/42,568,448
6. Step 6: Final answer
   x = 98,994,064.76