Finding the Third Proportional to 42,162 and 90,306

Step by Step Solution

1. Step 1: Write the proportion equation
   42,162 : 90,306 = 90,306 : x
2. Step 2: Convert to fraction form
   42,162/90,306 = 90,306/x
3. Step 3: Cross multiply
   42,162x = 90,306 × 90,306
4. Step 4: Simplify right side
   42,162x = 8,155,173,636
5. Step 5: Solve for x
   x = 8,155,173,636/42,162
6. Step 6: Final answer
   x = 193,424.73