Finding the Third Proportional to 166,254.75 and 356,139

Step by Step Solution

1. Step 1: Write the proportion equation
   166,254.75 : 356,139 = 356,139 : x
2. Step 2: Convert to fraction form
   166,254.75/356,139 = 356,139/x
3. Step 3: Cross multiply
   166,254.75x = 356,139 × 356,139
4. Step 4: Simplify right side
   166,254.75x = 126,834,987,321
5. Step 5: Solve for x
   x = 126,834,987,321/166,254.75
6. Step 6: Final answer
   x = 762,895.42