Finding the Third Proportional to 20,399.63 and 43,211.25

Step by Step Solution

1. Step 1: Write the proportion equation
   20,399.63 : 43,211.25 = 43,211.25 : x
2. Step 2: Convert to fraction form
   20,399.63/43,211.25 = 43,211.25/x
3. Step 3: Cross multiply
   20,399.63x = 43,211.25 × 43,211.25
4. Step 4: Simplify right side
   20,399.63x = 1,867,212,126.56
5. Step 5: Solve for x
   x = 1,867,212,126.56/20,399.63
6. Step 6: Final answer
   x = 91,531.69