Finding the Third Proportional to 298,245 and 451,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,245 : 451,711.50 = 451,711.50 : x
2. Step 2: Convert to fraction form
   298,245/451,711.50 = 451,711.50/x
3. Step 3: Cross multiply
   298,245x = 451,711.50 × 451,711.50
4. Step 4: Simplify right side
   298,245x = 204,043,279,232.25
5. Step 5: Solve for x
   x = 204,043,279,232.25/298,245
6. Step 6: Final answer
   x = 684,146.52