Finding the Third Proportional to 144,722 and 308,560

Step by Step Solution

1. Step 1: Write the proportion equation
   144,722 : 308,560 = 308,560 : x
2. Step 2: Convert to fraction form
   144,722/308,560 = 308,560/x
3. Step 3: Cross multiply
   144,722x = 308,560 × 308,560
4. Step 4: Simplify right side
   144,722x = 95,209,273,600
5. Step 5: Solve for x
   x = 95,209,273,600/144,722
6. Step 6: Final answer
   x = 657,876.99