Finding the Third Proportional to 166,114 and 389,979

Step by Step Solution

1. Step 1: Write the proportion equation
   166,114 : 389,979 = 389,979 : x
2. Step 2: Convert to fraction form
   166,114/389,979 = 389,979/x
3. Step 3: Cross multiply
   166,114x = 389,979 × 389,979
4. Step 4: Simplify right side
   166,114x = 152,083,620,441
5. Step 5: Solve for x
   x = 152,083,620,441/166,114
6. Step 6: Final answer
   x = 915,537.65