Finding the Third Proportional to 705,810 and 1,665,905

Step by Step Solution

1. Step 1: Write the proportion equation
   705,810 : 1,665,905 = 1,665,905 : x
2. Step 2: Convert to fraction form
   705,810/1,665,905 = 1,665,905/x
3. Step 3: Cross multiply
   705,810x = 1,665,905 × 1,665,905
4. Step 4: Simplify right side
   705,810x = 2,775,239,469,025
5. Step 5: Solve for x
   x = 2,775,239,469,025/705,810
6. Step 6: Final answer
   x = 3,931,992.28