Finding the Third Proportional to 284,929.88 and 439,730.72

Step by Step Solution

1. Step 1: Write the proportion equation
   284,929.88 : 439,730.72 = 439,730.72 : x
2. Step 2: Convert to fraction form
   284,929.88/439,730.72 = 439,730.72/x
3. Step 3: Cross multiply
   284,929.88x = 439,730.72 × 439,730.72
4. Step 4: Simplify right side
   284,929.88x = 193,363,105,012.39
5. Step 5: Solve for x
   x = 193,363,105,012.39/284,929.88
6. Step 6: Final answer
   x = 678,634.01