Finding the Third Proportional to 840,544 and 1,261,680

Step by Step Solution

1. Step 1: Write the proportion equation
   840,544 : 1,261,680 = 1,261,680 : x
2. Step 2: Convert to fraction form
   840,544/1,261,680 = 1,261,680/x
3. Step 3: Cross multiply
   840,544x = 1,261,680 × 1,261,680
4. Step 4: Simplify right side
   840,544x = 1,591,836,422,400
5. Step 5: Solve for x
   x = 1,591,836,422,400/840,544
6. Step 6: Final answer
   x = 1,893,816.89