Finding the Third Proportional to 144,321 and 308,244

Step by Step Solution

1. Step 1: Write the proportion equation
   144,321 : 308,244 = 308,244 : x
2. Step 2: Convert to fraction form
   144,321/308,244 = 308,244/x
3. Step 3: Cross multiply
   144,321x = 308,244 × 308,244
4. Step 4: Simplify right side
   144,321x = 95,014,363,536
5. Step 5: Solve for x
   x = 95,014,363,536/144,321
6. Step 6: Final answer
   x = 658,354.39