Finding the Third Proportional to 623,380 and 1,363,400

Step by Step Solution

1. Step 1: Write the proportion equation
   623,380 : 1,363,400 = 1,363,400 : x
2. Step 2: Convert to fraction form
   623,380/1,363,400 = 1,363,400/x
3. Step 3: Cross multiply
   623,380x = 1,363,400 × 1,363,400
4. Step 4: Simplify right side
   623,380x = 1,858,859,560,000
5. Step 5: Solve for x
   x = 1,858,859,560,000/623,380
6. Step 6: Final answer
   x = 2,981,904.39