Finding the Third Proportional to 333,588 and 680,760

Step by Step Solution

1. Step 1: Write the proportion equation
   333,588 : 680,760 = 680,760 : x
2. Step 2: Convert to fraction form
   333,588/680,760 = 680,760/x
3. Step 3: Cross multiply
   333,588x = 680,760 × 680,760
4. Step 4: Simplify right side
   333,588x = 463,434,177,600
5. Step 5: Solve for x
   x = 463,434,177,600/333,588
6. Step 6: Final answer
   x = 1,389,241.15