Finding the Third Proportional to 274,158 and 408,955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   274,158 : 408,955.50 = 408,955.50 : x
2. Step 2: Convert to fraction form
   274,158/408,955.50 = 408,955.50/x
3. Step 3: Cross multiply
   274,158x = 408,955.50 × 408,955.50
4. Step 4: Simplify right side
   274,158x = 167,244,600,980.25
5. Step 5: Solve for x
   x = 167,244,600,980.25/274,158
6. Step 6: Final answer
   x = 610,029.99