Finding the Third Proportional to 246,480 and 396,826.50

Step by Step Solution

1. Step 1: Write the proportion equation
   246,480 : 396,826.50 = 396,826.50 : x
2. Step 2: Convert to fraction form
   246,480/396,826.50 = 396,826.50/x
3. Step 3: Cross multiply
   246,480x = 396,826.50 × 396,826.50
4. Step 4: Simplify right side
   246,480x = 157,471,271,102.25
5. Step 5: Solve for x
   x = 157,471,271,102.25/246,480
6. Step 6: Final answer
   x = 638,880.52