Finding the Third Proportional to 31,443.75 and 68,888.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,443.75 : 68,888.25 = 68,888.25 : x
2. Step 2: Convert to fraction form
   31,443.75/68,888.25 = 68,888.25/x
3. Step 3: Cross multiply
   31,443.75x = 68,888.25 × 68,888.25
4. Step 4: Simplify right side
   31,443.75x = 4,745,590,988.06
5. Step 5: Solve for x
   x = 4,745,590,988.06/31,443.75
6. Step 6: Final answer
   x = 150,923.19