Finding the Third Proportional to 4,499,589 and 9,899,682

Step by Step Solution

1. Step 1: Write the proportion equation
   4,499,589 : 9,899,682 = 9,899,682 : x
2. Step 2: Convert to fraction form
   4,499,589/9,899,682 = 9,899,682/x
3. Step 3: Cross multiply
   4,499,589x = 9,899,682 × 9,899,682
4. Step 4: Simplify right side
   4,499,589x = 98,003,703,701,124
5. Step 5: Solve for x
   x = 98,003,703,701,124/4,499,589
6. Step 6: Final answer
   x = 21,780,590.12