Finding the Third Proportional to 323,404.50 and 680,319

Step by Step Solution

1. Step 1: Write the proportion equation
   323,404.50 : 680,319 = 680,319 : x
2. Step 2: Convert to fraction form
   323,404.50/680,319 = 680,319/x
3. Step 3: Cross multiply
   323,404.50x = 680,319 × 680,319
4. Step 4: Simplify right side
   323,404.50x = 462,833,941,761
5. Step 5: Solve for x
   x = 462,833,941,761/323,404.50
6. Step 6: Final answer
   x = 1,431,130.18