Finding the Third Proportional to 372,110 and 815,144

Step by Step Solution

1. Step 1: Write the proportion equation
   372,110 : 815,144 = 815,144 : x
2. Step 2: Convert to fraction form
   372,110/815,144 = 815,144/x
3. Step 3: Cross multiply
   372,110x = 815,144 × 815,144
4. Step 4: Simplify right side
   372,110x = 664,459,740,736
5. Step 5: Solve for x
   x = 664,459,740,736/372,110
6. Step 6: Final answer
   x = 1,785,654.08