Finding the Third Proportional to 7,821.56 and 11,925.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,821.56 : 11,925.98 = 11,925.98 : x
2. Step 2: Convert to fraction form
   7,821.56/11,925.98 = 11,925.98/x
3. Step 3: Cross multiply
   7,821.56x = 11,925.98 × 11,925.98
4. Step 4: Simplify right side
   7,821.56x = 142,229,103.31
5. Step 5: Solve for x
   x = 142,229,103.31/7,821.56
6. Step 6: Final answer
   x = 18,184.23