Finding the Third Proportional to 312,384.09 and 673,353

Step by Step Solution

1. Step 1: Write the proportion equation
   312,384.09 : 673,353 = 673,353 : x
2. Step 2: Convert to fraction form
   312,384.09/673,353 = 673,353/x
3. Step 3: Cross multiply
   312,384.09x = 673,353 × 673,353
4. Step 4: Simplify right side
   312,384.09x = 453,404,262,609
5. Step 5: Solve for x
   x = 453,404,262,609/312,384.09
6. Step 6: Final answer
   x = 1,451,431.98