Finding the Third Proportional to 4,578,520 and 9,533,816

Step by Step Solution

1. Step 1: Write the proportion equation
   4,578,520 : 9,533,816 = 9,533,816 : x
2. Step 2: Convert to fraction form
   4,578,520/9,533,816 = 9,533,816/x
3. Step 3: Cross multiply
   4,578,520x = 9,533,816 × 9,533,816
4. Step 4: Simplify right side
   4,578,520x = 90,893,647,521,856
5. Step 5: Solve for x
   x = 90,893,647,521,856/4,578,520
6. Step 6: Final answer
   x = 19,852,189.69