Finding the Third Proportional to 156,009 and 231,718

Step by Step Solution

1. Step 1: Write the proportion equation
   156,009 : 231,718 = 231,718 : x
2. Step 2: Convert to fraction form
   156,009/231,718 = 231,718/x
3. Step 3: Cross multiply
   156,009x = 231,718 × 231,718
4. Step 4: Simplify right side
   156,009x = 53,693,231,524
5. Step 5: Solve for x
   x = 53,693,231,524/156,009
6. Step 6: Final answer
   x = 344,167.53