Finding the Third Proportional to 323,395.50 and 680,303

Step by Step Solution

1. Step 1: Write the proportion equation
   323,395.50 : 680,303 = 680,303 : x
2. Step 2: Convert to fraction form
   323,395.50/680,303 = 680,303/x
3. Step 3: Cross multiply
   323,395.50x = 680,303 × 680,303
4. Step 4: Simplify right side
   323,395.50x = 462,812,171,809
5. Step 5: Solve for x
   x = 462,812,171,809/323,395.50
6. Step 6: Final answer
   x = 1,431,102.70