Finding the Third Proportional to 13,538.25 and 19,690.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,538.25 : 19,690.88 = 19,690.88 : x
2. Step 2: Convert to fraction form
   13,538.25/19,690.88 = 19,690.88/x
3. Step 3: Cross multiply
   13,538.25x = 19,690.88 × 19,690.88
4. Step 4: Simplify right side
   13,538.25x = 387,730,558.27
5. Step 5: Solve for x
   x = 387,730,558.27/13,538.25
6. Step 6: Final answer
   x = 28,639.64