Finding the Third Proportional to 288,670.50 and 447,013.69

Step by Step Solution

1. Step 1: Write the proportion equation
   288,670.50 : 447,013.69 = 447,013.69 : x
2. Step 2: Convert to fraction form
   288,670.50/447,013.69 = 447,013.69/x
3. Step 3: Cross multiply
   288,670.50x = 447,013.69 × 447,013.69
4. Step 4: Simplify right side
   288,670.50x = 199,821,236,812.35
5. Step 5: Solve for x
   x = 199,821,236,812.35/288,670.50
6. Step 6: Final answer
   x = 692,212.18