Finding the Third Proportional to 145,582.50 and 308,661

Step by Step Solution

1. Step 1: Write the proportion equation
   145,582.50 : 308,661 = 308,661 : x
2. Step 2: Convert to fraction form
   145,582.50/308,661 = 308,661/x
3. Step 3: Cross multiply
   145,582.50x = 308,661 × 308,661
4. Step 4: Simplify right side
   145,582.50x = 95,271,612,921
5. Step 5: Solve for x
   x = 95,271,612,921/145,582.50
6. Step 6: Final answer
   x = 654,416.66