Finding the Third Proportional to 156,945 and 339,039

Step by Step Solution

1. Step 1: Write the proportion equation
   156,945 : 339,039 = 339,039 : x
2. Step 2: Convert to fraction form
   156,945/339,039 = 339,039/x
3. Step 3: Cross multiply
   156,945x = 339,039 × 339,039
4. Step 4: Simplify right side
   156,945x = 114,947,443,521
5. Step 5: Solve for x
   x = 114,947,443,521/156,945
6. Step 6: Final answer
   x = 732,405.90