Finding the Third Proportional to 55,366.50 and 129,981

Step by Step Solution

1. Step 1: Write the proportion equation
   55,366.50 : 129,981 = 129,981 : x
2. Step 2: Convert to fraction form
   55,366.50/129,981 = 129,981/x
3. Step 3: Cross multiply
   55,366.50x = 129,981 × 129,981
4. Step 4: Simplify right side
   55,366.50x = 16,895,060,361
5. Step 5: Solve for x
   x = 16,895,060,361/55,366.50
6. Step 6: Final answer
   x = 305,149.51