Finding the Third Proportional to 156,906 and 339,570

Step by Step Solution

1. Step 1: Write the proportion equation
   156,906 : 339,570 = 339,570 : x
2. Step 2: Convert to fraction form
   156,906/339,570 = 339,570/x
3. Step 3: Cross multiply
   156,906x = 339,570 × 339,570
4. Step 4: Simplify right side
   156,906x = 115,307,784,900
5. Step 5: Solve for x
   x = 115,307,784,900/156,906
6. Step 6: Final answer
   x = 734,884.48