Finding the Third Proportional to 90,681.75 and 140,886

Step by Step Solution

1. Step 1: Write the proportion equation
   90,681.75 : 140,886 = 140,886 : x
2. Step 2: Convert to fraction form
   90,681.75/140,886 = 140,886/x
3. Step 3: Cross multiply
   90,681.75x = 140,886 × 140,886
4. Step 4: Simplify right side
   90,681.75x = 19,848,864,996
5. Step 5: Solve for x
   x = 19,848,864,996/90,681.75
6. Step 6: Final answer
   x = 218,884.89