Finding the Third Proportional to 28,257 and 42,749.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,257 : 42,749.25 = 42,749.25 : x
2. Step 2: Convert to fraction form
   28,257/42,749.25 = 42,749.25/x
3. Step 3: Cross multiply
   28,257x = 42,749.25 × 42,749.25
4. Step 4: Simplify right side
   28,257x = 1,827,498,375.56
5. Step 5: Solve for x
   x = 1,827,498,375.56/28,257
6. Step 6: Final answer
   x = 64,674.18