Finding the Third Proportional to 4,575.56 and 9,956.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,575.56 : 9,956.06 = 9,956.06 : x
2. Step 2: Convert to fraction form
   4,575.56/9,956.06 = 9,956.06/x
3. Step 3: Cross multiply
   4,575.56x = 9,956.06 × 9,956.06
4. Step 4: Simplify right side
   4,575.56x = 99,123,180.50
5. Step 5: Solve for x
   x = 99,123,180.50/4,575.56
6. Step 6: Final answer
   x = 21,663.61