Finding the Third Proportional to 225,016.31 and 316,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   225,016.31 : 316,513.69 = 316,513.69 : x
2. Step 2: Convert to fraction form
   225,016.31/316,513.69 = 316,513.69/x
3. Step 3: Cross multiply
   225,016.31x = 316,513.69 × 316,513.69
4. Step 4: Simplify right side
   225,016.31x = 100,180,914,374.85
5. Step 5: Solve for x
   x = 100,180,914,374.85/225,016.31
6. Step 6: Final answer
   x = 445,216.23