Finding the Third Proportional to 204,023.18 and 316,978.31

Step by Step Solution

1. Step 1: Write the proportion equation
   204,023.18 : 316,978.31 = 316,978.31 : x
2. Step 2: Convert to fraction form
   204,023.18/316,978.31 = 316,978.31/x
3. Step 3: Cross multiply
   204,023.18x = 316,978.31 × 316,978.31
4. Step 4: Simplify right side
   204,023.18x = 100,475,250,595.35
5. Step 5: Solve for x
   x = 100,475,250,595.35/204,023.18
6. Step 6: Final answer
   x = 492,469.78