Finding the Third Proportional to 21,405.09 and 34,089.47

Step by Step Solution

1. Step 1: Write the proportion equation
   21,405.09 : 34,089.47 = 34,089.47 : x
2. Step 2: Convert to fraction form
   21,405.09/34,089.47 = 34,089.47/x
3. Step 3: Cross multiply
   21,405.09x = 34,089.47 × 34,089.47
4. Step 4: Simplify right side
   21,405.09x = 1,162,091,879.66
5. Step 5: Solve for x
   x = 1,162,091,879.66/21,405.09
6. Step 6: Final answer
   x = 54,290.44