Finding the Third Proportional to 18,783 and 28,116

Step by Step Solution

1. Step 1: Write the proportion equation
   18,783 : 28,116 = 28,116 : x
2. Step 2: Convert to fraction form
   18,783/28,116 = 28,116/x
3. Step 3: Cross multiply
   18,783x = 28,116 × 28,116
4. Step 4: Simplify right side
   18,783x = 790,509,456
5. Step 5: Solve for x
   x = 790,509,456/18,783
6. Step 6: Final answer
   x = 42,086.43