Finding the Third Proportional to 90,308 and 140,633

Step by Step Solution

1. Step 1: Write the proportion equation
   90,308 : 140,633 = 140,633 : x
2. Step 2: Convert to fraction form
   90,308/140,633 = 140,633/x
3. Step 3: Cross multiply
   90,308x = 140,633 × 140,633
4. Step 4: Simplify right side
   90,308x = 19,777,640,689
5. Step 5: Solve for x
   x = 19,777,640,689/90,308
6. Step 6: Final answer
   x = 219,002.09