Finding the Third Proportional to 90,317 and 140,646

Step by Step Solution

1. Step 1: Write the proportion equation
   90,317 : 140,646 = 140,646 : x
2. Step 2: Convert to fraction form
   90,317/140,646 = 140,646/x
3. Step 3: Cross multiply
   90,317x = 140,646 × 140,646
4. Step 4: Simplify right side
   90,317x = 19,781,297,316
5. Step 5: Solve for x
   x = 19,781,297,316/90,317
6. Step 6: Final answer
   x = 219,020.75