Finding the Third Proportional to 166,870 and 355,890

Step by Step Solution

1. Step 1: Write the proportion equation
   166,870 : 355,890 = 355,890 : x
2. Step 2: Convert to fraction form
   166,870/355,890 = 355,890/x
3. Step 3: Cross multiply
   166,870x = 355,890 × 355,890
4. Step 4: Simplify right side
   166,870x = 126,657,692,100
5. Step 5: Solve for x
   x = 126,657,692,100/166,870
6. Step 6: Final answer
   x = 759,020.15