Finding the Third Proportional to 143,190 and 282,765.38

Step by Step Solution

1. Step 1: Write the proportion equation
   143,190 : 282,765.38 = 282,765.38 : x
2. Step 2: Convert to fraction form
   143,190/282,765.38 = 282,765.38/x
3. Step 3: Cross multiply
   143,190x = 282,765.38 × 282,765.38
4. Step 4: Simplify right side
   143,190x = 79,956,257,298.89
5. Step 5: Solve for x
   x = 79,956,257,298.89/143,190
6. Step 6: Final answer
   x = 558,392.75