Finding the Third Proportional to 361,118 and 561,783

Step by Step Solution

1. Step 1: Write the proportion equation
   361,118 : 561,783 = 561,783 : x
2. Step 2: Convert to fraction form
   361,118/561,783 = 561,783/x
3. Step 3: Cross multiply
   361,118x = 561,783 × 561,783
4. Step 4: Simplify right side
   361,118x = 315,600,139,089
5. Step 5: Solve for x
   x = 315,600,139,089/361,118
6. Step 6: Final answer
   x = 873,952.94