Finding the Third Proportional to 42,355 and 90,188

Step by Step Solution

1. Step 1: Write the proportion equation
   42,355 : 90,188 = 90,188 : x
2. Step 2: Convert to fraction form
   42,355/90,188 = 90,188/x
3. Step 3: Cross multiply
   42,355x = 90,188 × 90,188
4. Step 4: Simplify right side
   42,355x = 8,133,875,344
5. Step 5: Solve for x
   x = 8,133,875,344/42,355
6. Step 6: Final answer
   x = 192,040.50