Finding the Third Proportional to 151,600.50 and 321,684

Step by Step Solution

1. Step 1: Write the proportion equation
   151,600.50 : 321,684 = 321,684 : x
2. Step 2: Convert to fraction form
   151,600.50/321,684 = 321,684/x
3. Step 3: Cross multiply
   151,600.50x = 321,684 × 321,684
4. Step 4: Simplify right side
   151,600.50x = 103,480,595,856
5. Step 5: Solve for x
   x = 103,480,595,856/151,600.50
6. Step 6: Final answer
   x = 682,587.43