Finding the Third Proportional to 12,922,686 and 20,007,162

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922,686 : 20,007,162 = 20,007,162 : x
2. Step 2: Convert to fraction form
   12,922,686/20,007,162 = 20,007,162/x
3. Step 3: Cross multiply
   12,922,686x = 20,007,162 × 20,007,162
4. Step 4: Simplify right side
   12,922,686x = 400,286,531,294,244
5. Step 5: Solve for x
   x = 400,286,531,294,244/12,922,686
6. Step 6: Final answer
   x = 30,975,490.03