Finding the Third Proportional to 6,616 and 13,781

Step by Step Solution

1. Step 1: Write the proportion equation
   6,616 : 13,781 = 13,781 : x
2. Step 2: Convert to fraction form
   6,616/13,781 = 13,781/x
3. Step 3: Cross multiply
   6,616x = 13,781 × 13,781
4. Step 4: Simplify right side
   6,616x = 189,915,961
5. Step 5: Solve for x
   x = 189,915,961/6,616
6. Step 6: Final answer
   x = 28,705.56