Finding the Third Proportional to 298,536 and 447,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,536 : 447,619.50 = 447,619.50 : x
2. Step 2: Convert to fraction form
   298,536/447,619.50 = 447,619.50/x
3. Step 3: Cross multiply
   298,536x = 447,619.50 × 447,619.50
4. Step 4: Simplify right side
   298,536x = 200,363,216,780.25
5. Step 5: Solve for x
   x = 200,363,216,780.25/298,536
6. Step 6: Final answer
   x = 671,152.61