Finding the Third Proportional to 12,840 and 28,032

Step by Step Solution

1. Step 1: Write the proportion equation
   12,840 : 28,032 = 28,032 : x
2. Step 2: Convert to fraction form
   12,840/28,032 = 28,032/x
3. Step 3: Cross multiply
   12,840x = 28,032 × 28,032
4. Step 4: Simplify right side
   12,840x = 785,793,024
5. Step 5: Solve for x
   x = 785,793,024/12,840
6. Step 6: Final answer
   x = 61,198.83