Finding the Third Proportional to 42,018.75 and 90,408.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.75 : 90,408.75 = 90,408.75 : x
2. Step 2: Convert to fraction form
   42,018.75/90,408.75 = 90,408.75/x
3. Step 3: Cross multiply
   42,018.75x = 90,408.75 × 90,408.75
4. Step 4: Simplify right side
   42,018.75x = 8,173,742,076.56
5. Step 5: Solve for x
   x = 8,173,742,076.56/42,018.75
6. Step 6: Final answer
   x = 194,526.06