Finding the Third Proportional to 308,300.50 and 675,515

Step by Step Solution

1. Step 1: Write the proportion equation
   308,300.50 : 675,515 = 675,515 : x
2. Step 2: Convert to fraction form
   308,300.50/675,515 = 675,515/x
3. Step 3: Cross multiply
   308,300.50x = 675,515 × 675,515
4. Step 4: Simplify right side
   308,300.50x = 456,320,515,225
5. Step 5: Solve for x
   x = 456,320,515,225/308,300.50
6. Step 6: Final answer
   x = 1,480,116.04