Finding the Third Proportional to 3,490,578 and 5,401,755

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490,578 : 5,401,755 = 5,401,755 : x
2. Step 2: Convert to fraction form
   3,490,578/5,401,755 = 5,401,755/x
3. Step 3: Cross multiply
   3,490,578x = 5,401,755 × 5,401,755
4. Step 4: Simplify right side
   3,490,578x = 29,178,957,080,025
5. Step 5: Solve for x
   x = 29,178,957,080,025/3,490,578
6. Step 6: Final answer
   x = 8,359,348.25