Finding the Third Proportional to 19,693 and 28,890

Step by Step Solution

1. Step 1: Write the proportion equation
   19,693 : 28,890 = 28,890 : x
2. Step 2: Convert to fraction form
   19,693/28,890 = 28,890/x
3. Step 3: Cross multiply
   19,693x = 28,890 × 28,890
4. Step 4: Simplify right side
   19,693x = 834,632,100
5. Step 5: Solve for x
   x = 834,632,100/19,693
6. Step 6: Final answer
   x = 42,382.17