Finding the Third Proportional to 379,156 and 819,116

Step by Step Solution

1. Step 1: Write the proportion equation
   379,156 : 819,116 = 819,116 : x
2. Step 2: Convert to fraction form
   379,156/819,116 = 819,116/x
3. Step 3: Cross multiply
   379,156x = 819,116 × 819,116
4. Step 4: Simplify right side
   379,156x = 670,951,021,456
5. Step 5: Solve for x
   x = 670,951,021,456/379,156
6. Step 6: Final answer
   x = 1,769,590.94