Finding the Third Proportional to 3,860,434 and 8,319,198

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860,434 : 8,319,198 = 8,319,198 : x
2. Step 2: Convert to fraction form
   3,860,434/8,319,198 = 8,319,198/x
3. Step 3: Cross multiply
   3,860,434x = 8,319,198 × 8,319,198
4. Step 4: Simplify right side
   3,860,434x = 69,209,055,363,204
5. Step 5: Solve for x
   x = 69,209,055,363,204/3,860,434
6. Step 6: Final answer
   x = 17,927,791.37