Finding the Third Proportional to 164,554 and 342,040

Step by Step Solution

1. Step 1: Write the proportion equation
   164,554 : 342,040 = 342,040 : x
2. Step 2: Convert to fraction form
   164,554/342,040 = 342,040/x
3. Step 3: Cross multiply
   164,554x = 342,040 × 342,040
4. Step 4: Simplify right side
   164,554x = 116,991,361,600
5. Step 5: Solve for x
   x = 116,991,361,600/164,554
6. Step 6: Final answer
   x = 710,960.30