Finding the Third Proportional to 145,611.50 and 298,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,611.50 : 298,276.50 = 298,276.50 : x
2. Step 2: Convert to fraction form
   145,611.50/298,276.50 = 298,276.50/x
3. Step 3: Cross multiply
   145,611.50x = 298,276.50 × 298,276.50
4. Step 4: Simplify right side
   145,611.50x = 88,968,870,452.25
5. Step 5: Solve for x
   x = 88,968,870,452.25/145,611.50
6. Step 6: Final answer
   x = 611,001.68