Finding the Third Proportional to 156,948 and 322,158

Step by Step Solution

1. Step 1: Write the proportion equation
   156,948 : 322,158 = 322,158 : x
2. Step 2: Convert to fraction form
   156,948/322,158 = 322,158/x
3. Step 3: Cross multiply
   156,948x = 322,158 × 322,158
4. Step 4: Simplify right side
   156,948x = 103,785,776,964
5. Step 5: Solve for x
   x = 103,785,776,964/156,948
6. Step 6: Final answer
   x = 661,274.93