Finding the Third Proportional to 5,420,236 and 8,397,655

Step by Step Solution

1. Step 1: Write the proportion equation
   5,420,236 : 8,397,655 = 8,397,655 : x
2. Step 2: Convert to fraction form
   5,420,236/8,397,655 = 8,397,655/x
3. Step 3: Cross multiply
   5,420,236x = 8,397,655 × 8,397,655
4. Step 4: Simplify right side
   5,420,236x = 70,520,609,499,025
5. Step 5: Solve for x
   x = 70,520,609,499,025/5,420,236
6. Step 6: Final answer
   x = 13,010,616.05