Finding the Third Proportional to 674,286 and 1,434,390

Step by Step Solution

1. Step 1: Write the proportion equation
   674,286 : 1,434,390 = 1,434,390 : x
2. Step 2: Convert to fraction form
   674,286/1,434,390 = 1,434,390/x
3. Step 3: Cross multiply
   674,286x = 1,434,390 × 1,434,390
4. Step 4: Simplify right side
   674,286x = 2,057,474,672,100
5. Step 5: Solve for x
   x = 2,057,474,672,100/674,286
6. Step 6: Final answer
   x = 3,051,338.26