Finding the Third Proportional to 156,210 and 323,496.38

Step by Step Solution

1. Step 1: Write the proportion equation
   156,210 : 323,496.38 = 323,496.38 : x
2. Step 2: Convert to fraction form
   156,210/323,496.38 = 323,496.38/x
3. Step 3: Cross multiply
   156,210x = 323,496.38 × 323,496.38
4. Step 4: Simplify right side
   156,210x = 104,649,904,638.14
5. Step 5: Solve for x
   x = 104,649,904,638.14/156,210
6. Step 6: Final answer
   x = 669,930.89