Finding the Third Proportional to 705,816 and 1,665,920

Step by Step Solution

1. Step 1: Write the proportion equation
   705,816 : 1,665,920 = 1,665,920 : x
2. Step 2: Convert to fraction form
   705,816/1,665,920 = 1,665,920/x
3. Step 3: Cross multiply
   705,816x = 1,665,920 × 1,665,920
4. Step 4: Simplify right side
   705,816x = 2,775,289,446,400
5. Step 5: Solve for x
   x = 2,775,289,446,400/705,816
6. Step 6: Final answer
   x = 3,932,029.66