Finding the Third Proportional to 166,218 and 356,250

Step by Step Solution

1. Step 1: Write the proportion equation
   166,218 : 356,250 = 356,250 : x
2. Step 2: Convert to fraction form
   166,218/356,250 = 356,250/x
3. Step 3: Cross multiply
   166,218x = 356,250 × 356,250
4. Step 4: Simplify right side
   166,218x = 126,914,062,500
5. Step 5: Solve for x
   x = 126,914,062,500/166,218
6. Step 6: Final answer
   x = 763,539.82