Finding the Third Proportional to 355,380 and 838,928.25

Step by Step Solution

1. Step 1: Write the proportion equation
   355,380 : 838,928.25 = 838,928.25 : x
2. Step 2: Convert to fraction form
   355,380/838,928.25 = 838,928.25/x
3. Step 3: Cross multiply
   355,380x = 838,928.25 × 838,928.25
4. Step 4: Simplify right side
   355,380x = 703,800,608,648.06
5. Step 5: Solve for x
   x = 703,800,608,648.06/355,380
6. Step 6: Final answer
   x = 1,980,417.04