Finding the Third Proportional to 156,872 and 322,084

Step by Step Solution

1. Step 1: Write the proportion equation
   156,872 : 322,084 = 322,084 : x
2. Step 2: Convert to fraction form
   156,872/322,084 = 322,084/x
3. Step 3: Cross multiply
   156,872x = 322,084 × 322,084
4. Step 4: Simplify right side
   156,872x = 103,738,103,056
5. Step 5: Solve for x
   x = 103,738,103,056/156,872
6. Step 6: Final answer
   x = 661,291.39