Finding the Third Proportional to 298,544 and 447,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,544 : 447,631.50 = 447,631.50 : x
2. Step 2: Convert to fraction form
   298,544/447,631.50 = 447,631.50/x
3. Step 3: Cross multiply
   298,544x = 447,631.50 × 447,631.50
4. Step 4: Simplify right side
   298,544x = 200,373,959,792.25
5. Step 5: Solve for x
   x = 200,373,959,792.25/298,544
6. Step 6: Final answer
   x = 671,170.61