Finding the Third Proportional to 185,277 and 379,290

Step by Step Solution

1. Step 1: Write the proportion equation
   185,277 : 379,290 = 379,290 : x
2. Step 2: Convert to fraction form
   185,277/379,290 = 379,290/x
3. Step 3: Cross multiply
   185,277x = 379,290 × 379,290
4. Step 4: Simplify right side
   185,277x = 143,860,904,100
5. Step 5: Solve for x
   x = 143,860,904,100/185,277
6. Step 6: Final answer
   x = 776,463.91