Finding the Third Proportional to 775,724 and 1,200,450

Step by Step Solution

1. Step 1: Write the proportion equation
   775,724 : 1,200,450 = 1,200,450 : x
2. Step 2: Convert to fraction form
   775,724/1,200,450 = 1,200,450/x
3. Step 3: Cross multiply
   775,724x = 1,200,450 × 1,200,450
4. Step 4: Simplify right side
   775,724x = 1,441,080,202,500
5. Step 5: Solve for x
   x = 1,441,080,202,500/775,724
6. Step 6: Final answer
   x = 1,857,722.85