Finding the Third Proportional to 623,670 and 1,321,500

Step by Step Solution

1. Step 1: Write the proportion equation
   623,670 : 1,321,500 = 1,321,500 : x
2. Step 2: Convert to fraction form
   623,670/1,321,500 = 1,321,500/x
3. Step 3: Cross multiply
   623,670x = 1,321,500 × 1,321,500
4. Step 4: Simplify right side
   623,670x = 1,746,362,250,000
5. Step 5: Solve for x
   x = 1,746,362,250,000/623,670
6. Step 6: Final answer
   x = 2,800,138.29