Finding the Third Proportional to 4,493,786 and 9,617,428

Step by Step Solution

1. Step 1: Write the proportion equation
   4,493,786 : 9,617,428 = 9,617,428 : x
2. Step 2: Convert to fraction form
   4,493,786/9,617,428 = 9,617,428/x
3. Step 3: Cross multiply
   4,493,786x = 9,617,428 × 9,617,428
4. Step 4: Simplify right side
   4,493,786x = 92,494,921,335,184
5. Step 5: Solve for x
   x = 92,494,921,335,184/4,493,786
6. Step 6: Final answer
   x = 20,582,849.59