Finding the Third Proportional to 4,188,776 and 6,404,992

Step by Step Solution

1. Step 1: Write the proportion equation
   4,188,776 : 6,404,992 = 6,404,992 : x
2. Step 2: Convert to fraction form
   4,188,776/6,404,992 = 6,404,992/x
3. Step 3: Cross multiply
   4,188,776x = 6,404,992 × 6,404,992
4. Step 4: Simplify right side
   4,188,776x = 41,023,922,520,064
5. Step 5: Solve for x
   x = 41,023,922,520,064/4,188,776
6. Step 6: Final answer
   x = 9,793,773.29