Finding the Third Proportional to 451,238 and 674,588

Step by Step Solution

1. Step 1: Write the proportion equation
   451,238 : 674,588 = 674,588 : x
2. Step 2: Convert to fraction form
   451,238/674,588 = 674,588/x
3. Step 3: Cross multiply
   451,238x = 674,588 × 674,588
4. Step 4: Simplify right side
   451,238x = 455,068,969,744
5. Step 5: Solve for x
   x = 455,068,969,744/451,238
6. Step 6: Final answer
   x = 1,008,489.91