Finding the Third Proportional to 156,956 and 322,254

Step by Step Solution

1. Step 1: Write the proportion equation
   156,956 : 322,254 = 322,254 : x
2. Step 2: Convert to fraction form
   156,956/322,254 = 322,254/x
3. Step 3: Cross multiply
   156,956x = 322,254 × 322,254
4. Step 4: Simplify right side
   156,956x = 103,847,640,516
5. Step 5: Solve for x
   x = 103,847,640,516/156,956
6. Step 6: Final answer
   x = 661,635.37