Finding the Third Proportional to 646,960 and 1,403,870

Step by Step Solution

1. Step 1: Write the proportion equation
   646,960 : 1,403,870 = 1,403,870 : x
2. Step 2: Convert to fraction form
   646,960/1,403,870 = 1,403,870/x
3. Step 3: Cross multiply
   646,960x = 1,403,870 × 1,403,870
4. Step 4: Simplify right side
   646,960x = 1,970,850,976,900
5. Step 5: Solve for x
   x = 1,970,850,976,900/646,960
6. Step 6: Final answer
   x = 3,046,325.86