Finding the Third Proportional to 15,420.38 and 33,728.91

Step by Step Solution

1. Step 1: Write the proportion equation
   15,420.38 : 33,728.91 = 33,728.91 : x
2. Step 2: Convert to fraction form
   15,420.38/33,728.91 = 33,728.91/x
3. Step 3: Cross multiply
   15,420.38x = 33,728.91 × 33,728.91
4. Step 4: Simplify right side
   15,420.38x = 1,137,639,116.82
5. Step 5: Solve for x
   x = 1,137,639,116.82/15,420.38
6. Step 6: Final answer
   x = 73,775.06