Finding the Third Proportional to 308,039 and 674,146.25

Step by Step Solution

1. Step 1: Write the proportion equation
   308,039 : 674,146.25 = 674,146.25 : x
2. Step 2: Convert to fraction form
   308,039/674,146.25 = 674,146.25/x
3. Step 3: Cross multiply
   308,039x = 674,146.25 × 674,146.25
4. Step 4: Simplify right side
   308,039x = 454,473,166,389.06
5. Step 5: Solve for x
   x = 454,473,166,389.06/308,039
6. Step 6: Final answer
   x = 1,475,375.41