Finding the Third Proportional to 9,179,568 and 19,980,432

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179,568 : 19,980,432 = 19,980,432 : x
2. Step 2: Convert to fraction form
   9,179,568/19,980,432 = 19,980,432/x
3. Step 3: Cross multiply
   9,179,568x = 19,980,432 × 19,980,432
4. Step 4: Simplify right side
   9,179,568x = 399,217,662,906,624
5. Step 5: Solve for x
   x = 399,217,662,906,624/9,179,568
6. Step 6: Final answer
   x = 43,489,809.42