Finding the Third Proportional to 28,707.75 and 42,059.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,707.75 : 42,059.25 = 42,059.25 : x
2. Step 2: Convert to fraction form
   28,707.75/42,059.25 = 42,059.25/x
3. Step 3: Cross multiply
   28,707.75x = 42,059.25 × 42,059.25
4. Step 4: Simplify right side
   28,707.75x = 1,768,980,510.56
5. Step 5: Solve for x
   x = 1,768,980,510.56/28,707.75
6. Step 6: Final answer
   x = 61,620.31