Finding the Third Proportional to 12,030.19 and 18,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,030.19 : 18,415.69 = 18,415.69 : x
2. Step 2: Convert to fraction form
   12,030.19/18,415.69 = 18,415.69/x
3. Step 3: Cross multiply
   12,030.19x = 18,415.69 × 18,415.69
4. Step 4: Simplify right side
   12,030.19x = 339,137,546.10
5. Step 5: Solve for x
   x = 339,137,546.10/12,030.19
6. Step 6: Final answer
   x = 28,190.55