Finding the Third Proportional to 90,424 and 140,012

Step by Step Solution

1. Step 1: Write the proportion equation
   90,424 : 140,012 = 140,012 : x
2. Step 2: Convert to fraction form
   90,424/140,012 = 140,012/x
3. Step 3: Cross multiply
   90,424x = 140,012 × 140,012
4. Step 4: Simplify right side
   90,424x = 19,603,360,144
5. Step 5: Solve for x
   x = 19,603,360,144/90,424
6. Step 6: Final answer
   x = 216,793.77