Finding the Third Proportional to 19,478 and 42,236

Step by Step Solution

1. Step 1: Write the proportion equation
   19,478 : 42,236 = 42,236 : x
2. Step 2: Convert to fraction form
   19,478/42,236 = 42,236/x
3. Step 3: Cross multiply
   19,478x = 42,236 × 42,236
4. Step 4: Simplify right side
   19,478x = 1,783,879,696
5. Step 5: Solve for x
   x = 1,783,879,696/19,478
6. Step 6: Final answer
   x = 91,584.34