Finding the Third Proportional to 3,728,979 and 8,122,212

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728,979 : 8,122,212 = 8,122,212 : x
2. Step 2: Convert to fraction form
   3,728,979/8,122,212 = 8,122,212/x
3. Step 3: Cross multiply
   3,728,979x = 8,122,212 × 8,122,212
4. Step 4: Simplify right side
   3,728,979x = 65,970,327,772,944
5. Step 5: Solve for x
   x = 65,970,327,772,944/3,728,979
6. Step 6: Final answer
   x = 17,691,257.52