Finding the Third Proportional to 3,998,342 and 8,774,824

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,342 : 8,774,824 = 8,774,824 : x
2. Step 2: Convert to fraction form
   3,998,342/8,774,824 = 8,774,824/x
3. Step 3: Cross multiply
   3,998,342x = 8,774,824 × 8,774,824
4. Step 4: Simplify right side
   3,998,342x = 76,997,536,230,976
5. Step 5: Solve for x
   x = 76,997,536,230,976/3,998,342
6. Step 6: Final answer
   x = 19,257,366.24