Finding the Third Proportional to 323,400.50 and 680,314

Step by Step Solution

1. Step 1: Write the proportion equation
   323,400.50 : 680,314 = 680,314 : x
2. Step 2: Convert to fraction form
   323,400.50/680,314 = 680,314/x
3. Step 3: Cross multiply
   323,400.50x = 680,314 × 680,314
4. Step 4: Simplify right side
   323,400.50x = 462,827,138,596
5. Step 5: Solve for x
   x = 462,827,138,596/323,400.50
6. Step 6: Final answer
   x = 1,431,126.85