Finding the Third Proportional to 30,843.75 and 66,972.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,843.75 : 66,972.56 = 66,972.56 : x
2. Step 2: Convert to fraction form
   30,843.75/66,972.56 = 66,972.56/x
3. Step 3: Cross multiply
   30,843.75x = 66,972.56 × 66,972.56
4. Step 4: Simplify right side
   30,843.75x = 4,485,324,127.82
5. Step 5: Solve for x
   x = 4,485,324,127.82/30,843.75
6. Step 6: Final answer
   x = 145,420.84