Finding the Third Proportional to 623,820 and 1,351,320

Step by Step Solution

1. Step 1: Write the proportion equation
   623,820 : 1,351,320 = 1,351,320 : x
2. Step 2: Convert to fraction form
   623,820/1,351,320 = 1,351,320/x
3. Step 3: Cross multiply
   623,820x = 1,351,320 × 1,351,320
4. Step 4: Simplify right side
   623,820x = 1,826,065,742,400
5. Step 5: Solve for x
   x = 1,826,065,742,400/623,820
6. Step 6: Final answer
   x = 2,927,231.80