Finding the Third Proportional to 72,317 and 156,930

Step by Step Solution

1. Step 1: Write the proportion equation
   72,317 : 156,930 = 156,930 : x
2. Step 2: Convert to fraction form
   72,317/156,930 = 156,930/x
3. Step 3: Cross multiply
   72,317x = 156,930 × 156,930
4. Step 4: Simplify right side
   72,317x = 24,627,024,900
5. Step 5: Solve for x
   x = 24,627,024,900/72,317
6. Step 6: Final answer
   x = 340,542.68