Finding the Third Proportional to 166,320 and 356,454

Step by Step Solution

1. Step 1: Write the proportion equation
   166,320 : 356,454 = 356,454 : x
2. Step 2: Convert to fraction form
   166,320/356,454 = 356,454/x
3. Step 3: Cross multiply
   166,320x = 356,454 × 356,454
4. Step 4: Simplify right side
   166,320x = 127,059,454,116
5. Step 5: Solve for x
   x = 127,059,454,116/166,320
6. Step 6: Final answer
   x = 763,945.73