Finding the Third Proportional to 90,078 and 196,012

Step by Step Solution

1. Step 1: Write the proportion equation
   90,078 : 196,012 = 196,012 : x
2. Step 2: Convert to fraction form
   90,078/196,012 = 196,012/x
3. Step 3: Cross multiply
   90,078x = 196,012 × 196,012
4. Step 4: Simplify right side
   90,078x = 38,420,704,144
5. Step 5: Solve for x
   x = 38,420,704,144/90,078
6. Step 6: Final answer
   x = 426,527.06