Finding the Third Proportional to 4,945,379 and 10,422,118

Step by Step Solution

1. Step 1: Write the proportion equation
   4,945,379 : 10,422,118 = 10,422,118 : x
2. Step 2: Convert to fraction form
   4,945,379/10,422,118 = 10,422,118/x
3. Step 3: Cross multiply
   4,945,379x = 10,422,118 × 10,422,118
4. Step 4: Simplify right side
   4,945,379x = 108,620,543,605,924
5. Step 5: Solve for x
   x = 108,620,543,605,924/4,945,379
6. Step 6: Final answer
   x = 21,964,048.38