Finding the Third Proportional to 88,690 and 140,412

Step by Step Solution

1. Step 1: Write the proportion equation
   88,690 : 140,412 = 140,412 : x
2. Step 2: Convert to fraction form
   88,690/140,412 = 140,412/x
3. Step 3: Cross multiply
   88,690x = 140,412 × 140,412
4. Step 4: Simplify right side
   88,690x = 19,715,529,744
5. Step 5: Solve for x
   x = 19,715,529,744/88,690
6. Step 6: Final answer
   x = 222,297.10