Finding the Third Proportional to 42,144.75 and 90,286.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,144.75 : 90,286.88 = 90,286.88 : x
2. Step 2: Convert to fraction form
   42,144.75/90,286.88 = 90,286.88/x
3. Step 3: Cross multiply
   42,144.75x = 90,286.88 × 90,286.88
4. Step 4: Simplify right side
   42,144.75x = 8,151,719,797.27
5. Step 5: Solve for x
   x = 8,151,719,797.27/42,144.75
6. Step 6: Final answer
   x = 193,421.95