Finding the Third Proportional to 89,330 and 189,028

Step by Step Solution

1. Step 1: Write the proportion equation
   89,330 : 189,028 = 189,028 : x
2. Step 2: Convert to fraction form
   89,330/189,028 = 189,028/x
3. Step 3: Cross multiply
   89,330x = 189,028 × 189,028
4. Step 4: Simplify right side
   89,330x = 35,731,584,784
5. Step 5: Solve for x
   x = 35,731,584,784/89,330
6. Step 6: Final answer
   x = 399,995.35