Finding the Third Proportional to 21,405.75 and 34,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,405.75 : 34,091.25 = 34,091.25 : x
2. Step 2: Convert to fraction form
   21,405.75/34,091.25 = 34,091.25/x
3. Step 3: Cross multiply
   21,405.75x = 34,091.25 × 34,091.25
4. Step 4: Simplify right side
   21,405.75x = 1,162,213,326.56
5. Step 5: Solve for x
   x = 1,162,213,326.56/21,405.75
6. Step 6: Final answer
   x = 54,294.45