Finding the Third Proportional to 19,728.56 and 30,663.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,728.56 : 30,663.56 = 30,663.56 : x
2. Step 2: Convert to fraction form
   19,728.56/30,663.56 = 30,663.56/x
3. Step 3: Cross multiply
   19,728.56x = 30,663.56 × 30,663.56
4. Step 4: Simplify right side
   19,728.56x = 940,254,065.19
5. Step 5: Solve for x
   x = 940,254,065.19/19,728.56
6. Step 6: Final answer
   x = 47,659.53