Finding the Third Proportional to 680,320 and 1,489,538

Step by Step Solution

1. Step 1: Write the proportion equation
   680,320 : 1,489,538 = 1,489,538 : x
2. Step 2: Convert to fraction form
   680,320/1,489,538 = 1,489,538/x
3. Step 3: Cross multiply
   680,320x = 1,489,538 × 1,489,538
4. Step 4: Simplify right side
   680,320x = 2,218,723,453,444
5. Step 5: Solve for x
   x = 2,218,723,453,444/680,320
6. Step 6: Final answer
   x = 3,261,293.88