Finding the Third Proportional to 166,240 and 356,300

Step by Step Solution

1. Step 1: Write the proportion equation
   166,240 : 356,300 = 356,300 : x
2. Step 2: Convert to fraction form
   166,240/356,300 = 356,300/x
3. Step 3: Cross multiply
   166,240x = 356,300 × 356,300
4. Step 4: Simplify right side
   166,240x = 126,949,690,000
5. Step 5: Solve for x
   x = 126,949,690,000/166,240
6. Step 6: Final answer
   x = 763,653.09