Finding the Third Proportional to 72,355 and 156,738

Step by Step Solution

1. Step 1: Write the proportion equation
   72,355 : 156,738 = 156,738 : x
2. Step 2: Convert to fraction form
   72,355/156,738 = 156,738/x
3. Step 3: Cross multiply
   72,355x = 156,738 × 156,738
4. Step 4: Simplify right side
   72,355x = 24,566,800,644
5. Step 5: Solve for x
   x = 24,566,800,644/72,355
6. Step 6: Final answer
   x = 339,531.49