Finding the Third Proportional to 646,179 and 1,409,856

Step by Step Solution

1. Step 1: Write the proportion equation
   646,179 : 1,409,856 = 1,409,856 : x
2. Step 2: Convert to fraction form
   646,179/1,409,856 = 1,409,856/x
3. Step 3: Cross multiply
   646,179x = 1,409,856 × 1,409,856
4. Step 4: Simplify right side
   646,179x = 1,987,693,940,736
5. Step 5: Solve for x
   x = 1,987,693,940,736/646,179
6. Step 6: Final answer
   x = 3,076,073.26