Finding the Third Proportional to 4,578,828 and 9,042,414

Step by Step Solution

1. Step 1: Write the proportion equation
   4,578,828 : 9,042,414 = 9,042,414 : x
2. Step 2: Convert to fraction form
   4,578,828/9,042,414 = 9,042,414/x
3. Step 3: Cross multiply
   4,578,828x = 9,042,414 × 9,042,414
4. Step 4: Simplify right side
   4,578,828x = 81,765,250,947,396
5. Step 5: Solve for x
   x = 81,765,250,947,396/4,578,828
6. Step 6: Final answer
   x = 17,857,244.46