Finding the Third Proportional to 172,179 and 379,158

Step by Step Solution

1. Step 1: Write the proportion equation
   172,179 : 379,158 = 379,158 : x
2. Step 2: Convert to fraction form
   172,179/379,158 = 379,158/x
3. Step 3: Cross multiply
   172,179x = 379,158 × 379,158
4. Step 4: Simplify right side
   172,179x = 143,760,788,964
5. Step 5: Solve for x
   x = 143,760,788,964/172,179
6. Step 6: Final answer
   x = 834,949.61