Finding the Third Proportional to 7,785.49 and 12,051.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,785.49 : 12,051.28 = 12,051.28 : x
2. Step 2: Convert to fraction form
   7,785.49/12,051.28 = 12,051.28/x
3. Step 3: Cross multiply
   7,785.49x = 12,051.28 × 12,051.28
4. Step 4: Simplify right side
   7,785.49x = 145,233,379.77
5. Step 5: Solve for x
   x = 145,233,379.77/7,785.49
6. Step 6: Final answer
   x = 18,654.36