Finding the Third Proportional to 19,901,928 and 42,570,568

Step by Step Solution

1. Step 1: Write the proportion equation
   19,901,928 : 42,570,568 = 42,570,568 : x
2. Step 2: Convert to fraction form
   19,901,928/42,570,568 = 42,570,568/x
3. Step 3: Cross multiply
   19,901,928x = 42,570,568 × 42,570,568
4. Step 4: Simplify right side
   19,901,928x = 1,812,253,259,842,624
5. Step 5: Solve for x
   x = 1,812,253,259,842,624/19,901,928
6. Step 6: Final answer
   x = 91,059,180.79