Finding the Third Proportional to 30,253.50 and 42,315.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,253.50 : 42,315.75 = 42,315.75 : x
2. Step 2: Convert to fraction form
   30,253.50/42,315.75 = 42,315.75/x
3. Step 3: Cross multiply
   30,253.50x = 42,315.75 × 42,315.75
4. Step 4: Simplify right side
   30,253.50x = 1,790,622,698.06
5. Step 5: Solve for x
   x = 1,790,622,698.06/30,253.50
6. Step 6: Final answer
   x = 59,187.29