Finding the Third Proportional to 297,121.50 and 447,105

Step by Step Solution

1. Step 1: Write the proportion equation
   297,121.50 : 447,105 = 447,105 : x
2. Step 2: Convert to fraction form
   297,121.50/447,105 = 447,105/x
3. Step 3: Cross multiply
   297,121.50x = 447,105 × 447,105
4. Step 4: Simplify right side
   297,121.50x = 199,902,881,025
5. Step 5: Solve for x
   x = 199,902,881,025/297,121.50
6. Step 6: Final answer
   x = 672,798.44