Finding the Third Proportional to 1,381,606 and 2,131,451

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381,606 : 2,131,451 = 2,131,451 : x
2. Step 2: Convert to fraction form
   1,381,606/2,131,451 = 2,131,451/x
3. Step 3: Cross multiply
   1,381,606x = 2,131,451 × 2,131,451
4. Step 4: Simplify right side
   1,381,606x = 4,543,083,365,401
5. Step 5: Solve for x
   x = 4,543,083,365,401/1,381,606
6. Step 6: Final answer
   x = 3,288,262.62