Finding the Third Proportional to 30,871.13 and 42,585.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,871.13 : 42,585.75 = 42,585.75 : x
2. Step 2: Convert to fraction form
   30,871.13/42,585.75 = 42,585.75/x
3. Step 3: Cross multiply
   30,871.13x = 42,585.75 × 42,585.75
4. Step 4: Simplify right side
   30,871.13x = 1,813,546,103.06
5. Step 5: Solve for x
   x = 1,813,546,103.06/30,871.13
6. Step 6: Final answer
   x = 58,745.71