Finding the Third Proportional to 407,728.50 and 867,945

Step by Step Solution

1. Step 1: Write the proportion equation
   407,728.50 : 867,945 = 867,945 : x
2. Step 2: Convert to fraction form
   407,728.50/867,945 = 867,945/x
3. Step 3: Cross multiply
   407,728.50x = 867,945 × 867,945
4. Step 4: Simplify right side
   407,728.50x = 753,328,523,025
5. Step 5: Solve for x
   x = 753,328,523,025/407,728.50
6. Step 6: Final answer
   x = 1,847,622.92