Finding the Third Proportional to 141,072 and 218,680

Step by Step Solution

1. Step 1: Write the proportion equation
   141,072 : 218,680 = 218,680 : x
2. Step 2: Convert to fraction form
   141,072/218,680 = 218,680/x
3. Step 3: Cross multiply
   141,072x = 218,680 × 218,680
4. Step 4: Simplify right side
   141,072x = 47,820,942,400
5. Step 5: Solve for x
   x = 47,820,942,400/141,072
6. Step 6: Final answer
   x = 338,982.52