Finding the Third Proportional to 155,514 and 322,710

Step by Step Solution

1. Step 1: Write the proportion equation
   155,514 : 322,710 = 322,710 : x
2. Step 2: Convert to fraction form
   155,514/322,710 = 322,710/x
3. Step 3: Cross multiply
   155,514x = 322,710 × 322,710
4. Step 4: Simplify right side
   155,514x = 104,141,744,100
5. Step 5: Solve for x
   x = 104,141,744,100/155,514
6. Step 6: Final answer
   x = 669,661.54