Finding the Third Proportional to 89,262 and 189,972

Step by Step Solution

1. Step 1: Write the proportion equation
   89,262 : 189,972 = 189,972 : x
2. Step 2: Convert to fraction form
   89,262/189,972 = 189,972/x
3. Step 3: Cross multiply
   89,262x = 189,972 × 189,972
4. Step 4: Simplify right side
   89,262x = 36,089,360,784
5. Step 5: Solve for x
   x = 36,089,360,784/89,262
6. Step 6: Final answer
   x = 404,308.23