Finding the Third Proportional to 7,821.56 and 12,112.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,821.56 : 12,112.03 = 12,112.03 : x
2. Step 2: Convert to fraction form
   7,821.56/12,112.03 = 12,112.03/x
3. Step 3: Cross multiply
   7,821.56x = 12,112.03 × 12,112.03
4. Step 4: Simplify right side
   7,821.56x = 146,701,301.00
5. Step 5: Solve for x
   x = 146,701,301.00/7,821.56
6. Step 6: Final answer
   x = 18,756.01