Finding the Third Proportional to 415,680 and 897,780

Step by Step Solution

1. Step 1: Write the proportion equation
   415,680 : 897,780 = 897,780 : x
2. Step 2: Convert to fraction form
   415,680/897,780 = 897,780/x
3. Step 3: Cross multiply
   415,680x = 897,780 × 897,780
4. Step 4: Simplify right side
   415,680x = 806,008,928,400
5. Step 5: Solve for x
   x = 806,008,928,400/415,680
6. Step 6: Final answer
   x = 1,939,013.01