Finding the Third Proportional to 447,086.50 and 676,408

Step by Step Solution

1. Step 1: Write the proportion equation
   447,086.50 : 676,408 = 676,408 : x
2. Step 2: Convert to fraction form
   447,086.50/676,408 = 676,408/x
3. Step 3: Cross multiply
   447,086.50x = 676,408 × 676,408
4. Step 4: Simplify right side
   447,086.50x = 457,527,782,464
5. Step 5: Solve for x
   x = 457,527,782,464/447,086.50
6. Step 6: Final answer
   x = 1,023,354.05