Finding the Third Proportional to 328,744.50 and 445,488

Step by Step Solution

1. Step 1: Write the proportion equation
   328,744.50 : 445,488 = 445,488 : x
2. Step 2: Convert to fraction form
   328,744.50/445,488 = 445,488/x
3. Step 3: Cross multiply
   328,744.50x = 445,488 × 445,488
4. Step 4: Simplify right side
   328,744.50x = 198,459,558,144
5. Step 5: Solve for x
   x = 198,459,558,144/328,744.50
6. Step 6: Final answer
   x = 603,689.36