Finding the Third Proportional to 722,000 and 1,122,490

Step by Step Solution

1. Step 1: Write the proportion equation
   722,000 : 1,122,490 = 1,122,490 : x
2. Step 2: Convert to fraction form
   722,000/1,122,490 = 1,122,490/x
3. Step 3: Cross multiply
   722,000x = 1,122,490 × 1,122,490
4. Step 4: Simplify right side
   722,000x = 1,259,983,800,100
5. Step 5: Solve for x
   x = 1,259,983,800,100/722,000
6. Step 6: Final answer
   x = 1,745,129.92