Finding the Third Proportional to 219,591 and 298,282.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,591 : 298,282.50 = 298,282.50 : x
2. Step 2: Convert to fraction form
   219,591/298,282.50 = 298,282.50/x
3. Step 3: Cross multiply
   219,591x = 298,282.50 × 298,282.50
4. Step 4: Simplify right side
   219,591x = 88,972,449,806.25
5. Step 5: Solve for x
   x = 88,972,449,806.25/219,591
6. Step 6: Final answer
   x = 405,173.48