Finding the Third Proportional to 30,449.06 and 66,431.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,449.06 : 66,431.34 = 66,431.34 : x
2. Step 2: Convert to fraction form
   30,449.06/66,431.34 = 66,431.34/x
3. Step 3: Cross multiply
   30,449.06x = 66,431.34 × 66,431.34
4. Step 4: Simplify right side
   30,449.06x = 4,413,123,432.43
5. Step 5: Solve for x
   x = 4,413,123,432.43/30,449.06
6. Step 6: Final answer
   x = 144,934.62