Finding the Third Proportional to 646,287 and 1,022,889

Step by Step Solution

1. Step 1: Write the proportion equation
   646,287 : 1,022,889 = 1,022,889 : x
2. Step 2: Convert to fraction form
   646,287/1,022,889 = 1,022,889/x
3. Step 3: Cross multiply
   646,287x = 1,022,889 × 1,022,889
4. Step 4: Simplify right side
   646,287x = 1,046,301,906,321
5. Step 5: Solve for x
   x = 1,046,301,906,321/646,287
6. Step 6: Final answer
   x = 1,618,943.14