Finding the Third Proportional to 19,390 and 41,156

Step by Step Solution

1. Step 1: Write the proportion equation
   19,390 : 41,156 = 41,156 : x
2. Step 2: Convert to fraction form
   19,390/41,156 = 41,156/x
3. Step 3: Cross multiply
   19,390x = 41,156 × 41,156
4. Step 4: Simplify right side
   19,390x = 1,693,816,336
5. Step 5: Solve for x
   x = 1,693,816,336/19,390
6. Step 6: Final answer
   x = 87,355.15