Finding the Third Proportional to 245,807.50 and 336,404

Step by Step Solution

1. Step 1: Write the proportion equation
   245,807.50 : 336,404 = 336,404 : x
2. Step 2: Convert to fraction form
   245,807.50/336,404 = 336,404/x
3. Step 3: Cross multiply
   245,807.50x = 336,404 × 336,404
4. Step 4: Simplify right side
   245,807.50x = 113,167,651,216
5. Step 5: Solve for x
   x = 113,167,651,216/245,807.50
6. Step 6: Final answer
   x = 460,391.37