Finding the Third Proportional to 674,118 and 1,431,339

Step by Step Solution

1. Step 1: Write the proportion equation
   674,118 : 1,431,339 = 1,431,339 : x
2. Step 2: Convert to fraction form
   674,118/1,431,339 = 1,431,339/x
3. Step 3: Cross multiply
   674,118x = 1,431,339 × 1,431,339
4. Step 4: Simplify right side
   674,118x = 2,048,731,332,921
5. Step 5: Solve for x
   x = 2,048,731,332,921/674,118
6. Step 6: Final answer
   x = 3,039,128.66