Finding the Third Proportional to 644,960 and 1,016,917

Step by Step Solution

1. Step 1: Write the proportion equation
   644,960 : 1,016,917 = 1,016,917 : x
2. Step 2: Convert to fraction form
   644,960/1,016,917 = 1,016,917/x
3. Step 3: Cross multiply
   644,960x = 1,016,917 × 1,016,917
4. Step 4: Simplify right side
   644,960x = 1,034,120,184,889
5. Step 5: Solve for x
   x = 1,034,120,184,889/644,960
6. Step 6: Final answer
   x = 1,603,386.54