Finding the Third Proportional to 30,921.75 and 68,951.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,921.75 : 68,951.25 = 68,951.25 : x
2. Step 2: Convert to fraction form
   30,921.75/68,951.25 = 68,951.25/x
3. Step 3: Cross multiply
   30,921.75x = 68,951.25 × 68,951.25
4. Step 4: Simplify right side
   30,921.75x = 4,754,274,876.56
5. Step 5: Solve for x
   x = 4,754,274,876.56/30,921.75
6. Step 6: Final answer
   x = 153,751.81