Finding the Third Proportional to 4,945,729.50 and 10,422,819

Step by Step Solution

1. Step 1: Write the proportion equation
   4,945,729.50 : 10,422,819 = 10,422,819 : x
2. Step 2: Convert to fraction form
   4,945,729.50/10,422,819 = 10,422,819/x
3. Step 3: Cross multiply
   4,945,729.50x = 10,422,819 × 10,422,819
4. Step 4: Simplify right side
   4,945,729.50x = 108,635,155,906,761
5. Step 5: Solve for x
   x = 108,635,155,906,761/4,945,729.50
6. Step 6: Final answer
   x = 21,965,446.33