Finding the Third Proportional to 680,294 and 1,489,612

Step by Step Solution

1. Step 1: Write the proportion equation
   680,294 : 1,489,612 = 1,489,612 : x
2. Step 2: Convert to fraction form
   680,294/1,489,612 = 1,489,612/x
3. Step 3: Cross multiply
   680,294x = 1,489,612 × 1,489,612
4. Step 4: Simplify right side
   680,294x = 2,218,943,910,544
5. Step 5: Solve for x
   x = 2,218,943,910,544/680,294
6. Step 6: Final answer
   x = 3,261,742.59