Finding the Third Proportional to 374,257.50 and 818,499

Step by Step Solution

1. Step 1: Write the proportion equation
   374,257.50 : 818,499 = 818,499 : x
2. Step 2: Convert to fraction form
   374,257.50/818,499 = 818,499/x
3. Step 3: Cross multiply
   374,257.50x = 818,499 × 818,499
4. Step 4: Simplify right side
   374,257.50x = 669,940,613,001
5. Step 5: Solve for x
   x = 669,940,613,001/374,257.50
6. Step 6: Final answer
   x = 1,790,052.61