Finding the Third Proportional to 401,561 and 745,666

Step by Step Solution

1. Step 1: Write the proportion equation
   401,561 : 745,666 = 745,666 : x
2. Step 2: Convert to fraction form
   401,561/745,666 = 745,666/x
3. Step 3: Cross multiply
   401,561x = 745,666 × 745,666
4. Step 4: Simplify right side
   401,561x = 556,017,783,556
5. Step 5: Solve for x
   x = 556,017,783,556/401,561
6. Step 6: Final answer
   x = 1,384,640.90