Finding the Third Proportional to 4,028,742 and 8,653,806

Step by Step Solution

1. Step 1: Write the proportion equation
   4,028,742 : 8,653,806 = 8,653,806 : x
2. Step 2: Convert to fraction form
   4,028,742/8,653,806 = 8,653,806/x
3. Step 3: Cross multiply
   4,028,742x = 8,653,806 × 8,653,806
4. Step 4: Simplify right side
   4,028,742x = 74,888,358,285,636
5. Step 5: Solve for x
   x = 74,888,358,285,636/4,028,742
6. Step 6: Final answer
   x = 18,588,521.75