Finding the Third Proportional to 162,211.50 and 216,981

Step by Step Solution

1. Step 1: Write the proportion equation
   162,211.50 : 216,981 = 216,981 : x
2. Step 2: Convert to fraction form
   162,211.50/216,981 = 216,981/x
3. Step 3: Cross multiply
   162,211.50x = 216,981 × 216,981
4. Step 4: Simplify right side
   162,211.50x = 47,080,754,361
5. Step 5: Solve for x
   x = 47,080,754,361/162,211.50
6. Step 6: Final answer
   x = 290,243.01