Finding the Third Proportional to 297,196.50 and 451,471.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,196.50 : 451,471.50 = 451,471.50 : x
2. Step 2: Convert to fraction form
   297,196.50/451,471.50 = 451,471.50/x
3. Step 3: Cross multiply
   297,196.50x = 451,471.50 × 451,471.50
4. Step 4: Simplify right side
   297,196.50x = 203,826,515,312.25
5. Step 5: Solve for x
   x = 203,826,515,312.25/297,196.50
6. Step 6: Final answer
   x = 685,830.81