Finding the Third Proportional to 373,886 and 561,303

Step by Step Solution

1. Step 1: Write the proportion equation
   373,886 : 561,303 = 561,303 : x
2. Step 2: Convert to fraction form
   373,886/561,303 = 561,303/x
3. Step 3: Cross multiply
   373,886x = 561,303 × 561,303
4. Step 4: Simplify right side
   373,886x = 315,061,057,809
5. Step 5: Solve for x
   x = 315,061,057,809/373,886
6. Step 6: Final answer
   x = 842,666.10