Finding the Third Proportional to 72,921 and 159,558

Step by Step Solution

1. Step 1: Write the proportion equation
   72,921 : 159,558 = 159,558 : x
2. Step 2: Convert to fraction form
   72,921/159,558 = 159,558/x
3. Step 3: Cross multiply
   72,921x = 159,558 × 159,558
4. Step 4: Simplify right side
   72,921x = 25,458,755,364
5. Step 5: Solve for x
   x = 25,458,755,364/72,921
6. Step 6: Final answer
   x = 349,127.90