Finding the Third Proportional to 307,562 and 665,666

Step by Step Solution

1. Step 1: Write the proportion equation
   307,562 : 665,666 = 665,666 : x
2. Step 2: Convert to fraction form
   307,562/665,666 = 665,666/x
3. Step 3: Cross multiply
   307,562x = 665,666 × 665,666
4. Step 4: Simplify right side
   307,562x = 443,111,223,556
5. Step 5: Solve for x
   x = 443,111,223,556/307,562
6. Step 6: Final answer
   x = 1,440,721.62