Finding the Third Proportional to 72,211.50 and 158,679

Step by Step Solution

1. Step 1: Write the proportion equation
   72,211.50 : 158,679 = 158,679 : x
2. Step 2: Convert to fraction form
   72,211.50/158,679 = 158,679/x
3. Step 3: Cross multiply
   72,211.50x = 158,679 × 158,679
4. Step 4: Simplify right side
   72,211.50x = 25,179,025,041
5. Step 5: Solve for x
   x = 25,179,025,041/72,211.50
6. Step 6: Final answer
   x = 348,684.42