Finding the Third Proportional to 156,669 and 321,632

Step by Step Solution

1. Step 1: Write the proportion equation
   156,669 : 321,632 = 321,632 : x
2. Step 2: Convert to fraction form
   156,669/321,632 = 321,632/x
3. Step 3: Cross multiply
   156,669x = 321,632 × 321,632
4. Step 4: Simplify right side
   156,669x = 103,447,143,424
5. Step 5: Solve for x
   x = 103,447,143,424/156,669
6. Step 6: Final answer
   x = 660,291.08