Finding the Third Proportional to 42,558 and 90,496

Step by Step Solution

1. Step 1: Write the proportion equation
   42,558 : 90,496 = 90,496 : x
2. Step 2: Convert to fraction form
   42,558/90,496 = 90,496/x
3. Step 3: Cross multiply
   42,558x = 90,496 × 90,496
4. Step 4: Simplify right side
   42,558x = 8,189,526,016
5. Step 5: Solve for x
   x = 8,189,526,016/42,558
6. Step 6: Final answer
   x = 192,432.12