Finding the Third Proportional to 12,555.13 and 18,994.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,555.13 : 18,994.69 = 18,994.69 : x
2. Step 2: Convert to fraction form
   12,555.13/18,994.69 = 18,994.69/x
3. Step 3: Cross multiply
   12,555.13x = 18,994.69 × 18,994.69
4. Step 4: Simplify right side
   12,555.13x = 360,798,153.22
5. Step 5: Solve for x
   x = 360,798,153.22/12,555.13
6. Step 6: Final answer
   x = 28,737.12