Finding the Third Proportional to 329,305.50 and 684,450

Step by Step Solution

1. Step 1: Write the proportion equation
   329,305.50 : 684,450 = 684,450 : x
2. Step 2: Convert to fraction form
   329,305.50/684,450 = 684,450/x
3. Step 3: Cross multiply
   329,305.50x = 684,450 × 684,450
4. Step 4: Simplify right side
   329,305.50x = 468,471,802,500
5. Step 5: Solve for x
   x = 468,471,802,500/329,305.50
6. Step 6: Final answer
   x = 1,422,605.46