Finding the Third Proportional to 13,015.69 and 21,042.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015.69 : 21,042.28 = 21,042.28 : x
2. Step 2: Convert to fraction form
   13,015.69/21,042.28 = 21,042.28/x
3. Step 3: Cross multiply
   13,015.69x = 21,042.28 × 21,042.28
4. Step 4: Simplify right side
   13,015.69x = 442,777,600.20
5. Step 5: Solve for x
   x = 442,777,600.20/13,015.69
6. Step 6: Final answer
   x = 34,018.76