Finding the Third Proportional to 331,789.50 and 725,673

Step by Step Solution

1. Step 1: Write the proportion equation
   331,789.50 : 725,673 = 725,673 : x
2. Step 2: Convert to fraction form
   331,789.50/725,673 = 725,673/x
3. Step 3: Cross multiply
   331,789.50x = 725,673 × 725,673
4. Step 4: Simplify right side
   331,789.50x = 526,601,302,929
5. Step 5: Solve for x
   x = 526,601,302,929/331,789.50
6. Step 6: Final answer
   x = 1,587,154.82