Finding the Third Proportional to 366,961 and 561,384

Step by Step Solution

1. Step 1: Write the proportion equation
   366,961 : 561,384 = 561,384 : x
2. Step 2: Convert to fraction form
   366,961/561,384 = 561,384/x
3. Step 3: Cross multiply
   366,961x = 561,384 × 561,384
4. Step 4: Simplify right side
   366,961x = 315,151,995,456
5. Step 5: Solve for x
   x = 315,151,995,456/366,961
6. Step 6: Final answer
   x = 858,816.05