Finding the Third Proportional to 13,388.63 and 19,888.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,388.63 : 19,888.88 = 19,888.88 : x
2. Step 2: Convert to fraction form
   13,388.63/19,888.88 = 19,888.88/x
3. Step 3: Cross multiply
   13,388.63x = 19,888.88 × 19,888.88
4. Step 4: Simplify right side
   13,388.63x = 395,567,348.77
5. Step 5: Solve for x
   x = 395,567,348.77/13,388.63
6. Step 6: Final answer
   x = 29,545.03