Finding the Third Proportional to 141,293.25 and 212,256

Step by Step Solution

1. Step 1: Write the proportion equation
   141,293.25 : 212,256 = 212,256 : x
2. Step 2: Convert to fraction form
   141,293.25/212,256 = 212,256/x
3. Step 3: Cross multiply
   141,293.25x = 212,256 × 212,256
4. Step 4: Simplify right side
   141,293.25x = 45,052,609,536
5. Step 5: Solve for x
   x = 45,052,609,536/141,293.25
6. Step 6: Final answer
   x = 318,858.89