Finding the Third Proportional to 328,998 and 445,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,998 : 445,813.50 = 445,813.50 : x
2. Step 2: Convert to fraction form
   328,998/445,813.50 = 445,813.50/x
3. Step 3: Cross multiply
   328,998x = 445,813.50 × 445,813.50
4. Step 4: Simplify right side
   328,998x = 198,749,676,782.25
5. Step 5: Solve for x
   x = 198,749,676,782.25/328,998
6. Step 6: Final answer
   x = 604,106.03