Finding the Third Proportional to 90,270 and 140,403

Step by Step Solution

1. Step 1: Write the proportion equation
   90,270 : 140,403 = 140,403 : x
2. Step 2: Convert to fraction form
   90,270/140,403 = 140,403/x
3. Step 3: Cross multiply
   90,270x = 140,403 × 140,403
4. Step 4: Simplify right side
   90,270x = 19,713,002,409
5. Step 5: Solve for x
   x = 19,713,002,409/90,270
6. Step 6: Final answer
   x = 218,378.23