Finding the Third Proportional to 308,016 and 674,820

Step by Step Solution

1. Step 1: Write the proportion equation
   308,016 : 674,820 = 674,820 : x
2. Step 2: Convert to fraction form
   308,016/674,820 = 674,820/x
3. Step 3: Cross multiply
   308,016x = 674,820 × 674,820
4. Step 4: Simplify right side
   308,016x = 455,382,032,400
5. Step 5: Solve for x
   x = 455,382,032,400/308,016
6. Step 6: Final answer
   x = 1,478,436.29