Finding the Third Proportional to 726,360 and 1,200,420

Step by Step Solution

1. Step 1: Write the proportion equation
   726,360 : 1,200,420 = 1,200,420 : x
2. Step 2: Convert to fraction form
   726,360/1,200,420 = 1,200,420/x
3. Step 3: Cross multiply
   726,360x = 1,200,420 × 1,200,420
4. Step 4: Simplify right side
   726,360x = 1,441,008,176,400
5. Step 5: Solve for x
   x = 1,441,008,176,400/726,360
6. Step 6: Final answer
   x = 1,983,876.01