Finding the Third Proportional to 19,992 and 28,140

Step by Step Solution

1. Step 1: Write the proportion equation
   19,992 : 28,140 = 28,140 : x
2. Step 2: Convert to fraction form
   19,992/28,140 = 28,140/x
3. Step 3: Cross multiply
   19,992x = 28,140 × 28,140
4. Step 4: Simplify right side
   19,992x = 791,859,600
5. Step 5: Solve for x
   x = 791,859,600/19,992
6. Step 6: Final answer
   x = 39,608.82