Finding the Third Proportional to 156,948 and 322,238

Step by Step Solution

1. Step 1: Write the proportion equation
   156,948 : 322,238 = 322,238 : x
2. Step 2: Convert to fraction form
   156,948/322,238 = 322,238/x
3. Step 3: Cross multiply
   156,948x = 322,238 × 322,238
4. Step 4: Simplify right side
   156,948x = 103,837,328,644
5. Step 5: Solve for x
   x = 103,837,328,644/156,948
6. Step 6: Final answer
   x = 661,603.39