Finding the Third Proportional to 10,430.25 and 21,723.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430.25 : 21,723.75 = 21,723.75 : x
2. Step 2: Convert to fraction form
   10,430.25/21,723.75 = 21,723.75/x
3. Step 3: Cross multiply
   10,430.25x = 21,723.75 × 21,723.75
4. Step 4: Simplify right side
   10,430.25x = 471,921,314.06
5. Step 5: Solve for x
   x = 471,921,314.06/10,430.25
6. Step 6: Final answer
   x = 45,245.45