Finding the Third Proportional to 156,920 and 322,182

Step by Step Solution

1. Step 1: Write the proportion equation
   156,920 : 322,182 = 322,182 : x
2. Step 2: Convert to fraction form
   156,920/322,182 = 322,182/x
3. Step 3: Cross multiply
   156,920x = 322,182 × 322,182
4. Step 4: Simplify right side
   156,920x = 103,801,241,124
5. Step 5: Solve for x
   x = 103,801,241,124/156,920
6. Step 6: Final answer
   x = 661,491.47