Finding the Third Proportional to 13,663.69 and 19,951.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,663.69 : 19,951.31 = 19,951.31 : x
2. Step 2: Convert to fraction form
   13,663.69/19,951.31 = 19,951.31/x
3. Step 3: Cross multiply
   13,663.69x = 19,951.31 × 19,951.31
4. Step 4: Simplify right side
   13,663.69x = 398,054,870.47
5. Step 5: Solve for x
   x = 398,054,870.47/13,663.69
6. Step 6: Final answer
   x = 29,132.32