Finding the Third Proportional to 30,636.56 and 66,112.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,636.56 : 66,112.31 = 66,112.31 : x
2. Step 2: Convert to fraction form
   30,636.56/66,112.31 = 66,112.31/x
3. Step 3: Cross multiply
   30,636.56x = 66,112.31 × 66,112.31
4. Step 4: Simplify right side
   30,636.56x = 4,370,837,864.10
5. Step 5: Solve for x
   x = 4,370,837,864.10/30,636.56
6. Step 6: Final answer
   x = 142,667.37