Finding the Third Proportional to 14,866.66 and 21,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,866.66 : 21,138.15 = 21,138.15 : x
2. Step 2: Convert to fraction form
   14,866.66/21,138.15 = 21,138.15/x
3. Step 3: Cross multiply
   14,866.66x = 21,138.15 × 21,138.15
4. Step 4: Simplify right side
   14,866.66x = 446,821,484.51
5. Step 5: Solve for x
   x = 446,821,484.51/14,866.66
6. Step 6: Final answer
   x = 30,055.26