Finding the Third Proportional to 4,499,596 and 9,899,696

Step by Step Solution

1. Step 1: Write the proportion equation
   4,499,596 : 9,899,696 = 9,899,696 : x
2. Step 2: Convert to fraction form
   4,499,596/9,899,696 = 9,899,696/x
3. Step 3: Cross multiply
   4,499,596x = 9,899,696 × 9,899,696
4. Step 4: Simplify right side
   4,499,596x = 98,003,980,892,416
5. Step 5: Solve for x
   x = 98,003,980,892,416/4,499,596
6. Step 6: Final answer
   x = 21,780,617.84