Finding the Third Proportional to 90,522 and 189,306

Step by Step Solution

1. Step 1: Write the proportion equation
   90,522 : 189,306 = 189,306 : x
2. Step 2: Convert to fraction form
   90,522/189,306 = 189,306/x
3. Step 3: Cross multiply
   90,522x = 189,306 × 189,306
4. Step 4: Simplify right side
   90,522x = 35,836,761,636
5. Step 5: Solve for x
   x = 35,836,761,636/90,522
6. Step 6: Final answer
   x = 395,890.08