Finding the Third Proportional to 90,145 and 140,133

Step by Step Solution

1. Step 1: Write the proportion equation
   90,145 : 140,133 = 140,133 : x
2. Step 2: Convert to fraction form
   90,145/140,133 = 140,133/x
3. Step 3: Cross multiply
   90,145x = 140,133 × 140,133
4. Step 4: Simplify right side
   90,145x = 19,637,257,689
5. Step 5: Solve for x
   x = 19,637,257,689/90,145
6. Step 6: Final answer
   x = 217,840.79