Finding the Third Proportional to 171,955.50 and 278,574

Step by Step Solution

1. Step 1: Write the proportion equation
   171,955.50 : 278,574 = 278,574 : x
2. Step 2: Convert to fraction form
   171,955.50/278,574 = 278,574/x
3. Step 3: Cross multiply
   171,955.50x = 278,574 × 278,574
4. Step 4: Simplify right side
   171,955.50x = 77,603,473,476
5. Step 5: Solve for x
   x = 77,603,473,476/171,955.50
6. Step 6: Final answer
   x = 451,299.75