Finding the Third Proportional to 245,805 and 336,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,805 : 336,400.50 = 336,400.50 : x
2. Step 2: Convert to fraction form
   245,805/336,400.50 = 336,400.50/x
3. Step 3: Cross multiply
   245,805x = 336,400.50 × 336,400.50
4. Step 4: Simplify right side
   245,805x = 113,165,296,400.25
5. Step 5: Solve for x
   x = 113,165,296,400.25/245,805
6. Step 6: Final answer
   x = 460,386.47