Finding the Third Proportional to 366,976 and 561,404

Step by Step Solution

1. Step 1: Write the proportion equation
   366,976 : 561,404 = 561,404 : x
2. Step 2: Convert to fraction form
   366,976/561,404 = 561,404/x
3. Step 3: Cross multiply
   366,976x = 561,404 × 561,404
4. Step 4: Simplify right side
   366,976x = 315,174,451,216
5. Step 5: Solve for x
   x = 315,174,451,216/366,976
6. Step 6: Final answer
   x = 858,842.13