Finding the Third Proportional to 28,608.19 and 43,218.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,608.19 : 43,218.56 = 43,218.56 : x
2. Step 2: Convert to fraction form
   28,608.19/43,218.56 = 43,218.56/x
3. Step 3: Cross multiply
   28,608.19x = 43,218.56 × 43,218.56
4. Step 4: Simplify right side
   28,608.19x = 1,867,844,144.57
5. Step 5: Solve for x
   x = 1,867,844,144.57/28,608.19
6. Step 6: Final answer
   x = 65,290.54