Finding the Third Proportional to 328,819.50 and 445,599

Step by Step Solution

1. Step 1: Write the proportion equation
   328,819.50 : 445,599 = 445,599 : x
2. Step 2: Convert to fraction form
   328,819.50/445,599 = 445,599/x
3. Step 3: Cross multiply
   328,819.50x = 445,599 × 445,599
4. Step 4: Simplify right side
   328,819.50x = 198,558,468,801
5. Step 5: Solve for x
   x = 198,558,468,801/328,819.50
6. Step 6: Final answer
   x = 603,852.47