Finding the Third Proportional to 395,116 and 627,666

Step by Step Solution

1. Step 1: Write the proportion equation
   395,116 : 627,666 = 627,666 : x
2. Step 2: Convert to fraction form
   395,116/627,666 = 627,666/x
3. Step 3: Cross multiply
   395,116x = 627,666 × 627,666
4. Step 4: Simplify right side
   395,116x = 393,964,607,556
5. Step 5: Solve for x
   x = 393,964,607,556/395,116
6. Step 6: Final answer
   x = 997,085.94