Finding the Third Proportional to 448,960.50 and 610,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   448,960.50 : 610,665.50 = 610,665.50 : x
2. Step 2: Convert to fraction form
   448,960.50/610,665.50 = 610,665.50/x
3. Step 3: Cross multiply
   448,960.50x = 610,665.50 × 610,665.50
4. Step 4: Simplify right side
   448,960.50x = 372,912,352,890.25
5. Step 5: Solve for x
   x = 372,912,352,890.25/448,960.50
6. Step 6: Final answer
   x = 830,612.83