Finding the Third Proportional to 139,190.50 and 215,182

Step by Step Solution

1. Step 1: Write the proportion equation
   139,190.50 : 215,182 = 215,182 : x
2. Step 2: Convert to fraction form
   139,190.50/215,182 = 215,182/x
3. Step 3: Cross multiply
   139,190.50x = 215,182 × 215,182
4. Step 4: Simplify right side
   139,190.50x = 46,303,293,124
5. Step 5: Solve for x
   x = 46,303,293,124/139,190.50
6. Step 6: Final answer
   x = 332,661.30