Finding the Third Proportional to 13,709 and 28,389

Step by Step Solution

1. Step 1: Write the proportion equation
   13,709 : 28,389 = 28,389 : x
2. Step 2: Convert to fraction form
   13,709/28,389 = 28,389/x
3. Step 3: Cross multiply
   13,709x = 28,389 × 28,389
4. Step 4: Simplify right side
   13,709x = 805,935,321
5. Step 5: Solve for x
   x = 805,935,321/13,709
6. Step 6: Final answer
   x = 58,788.78