Finding the Third Proportional to 42,405.75 and 89,169.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,405.75 : 89,169.75 = 89,169.75 : x
2. Step 2: Convert to fraction form
   42,405.75/89,169.75 = 89,169.75/x
3. Step 3: Cross multiply
   42,405.75x = 89,169.75 × 89,169.75
4. Step 4: Simplify right side
   42,405.75x = 7,951,244,315.06
5. Step 5: Solve for x
   x = 7,951,244,315.06/42,405.75
6. Step 6: Final answer
   x = 187,503.92