Finding the Third Proportional to 28,405.69 and 42,608.53

Step by Step Solution

1. Step 1: Write the proportion equation
   28,405.69 : 42,608.53 = 42,608.53 : x
2. Step 2: Convert to fraction form
   28,405.69/42,608.53 = 42,608.53/x
3. Step 3: Cross multiply
   28,405.69x = 42,608.53 × 42,608.53
4. Step 4: Simplify right side
   28,405.69x = 1,815,486,935.28
5. Step 5: Solve for x
   x = 1,815,486,935.28/28,405.69
6. Step 6: Final answer
   x = 63,912.80