Finding the Third Proportional to 689,328 and 1,441,440

Step by Step Solution

1. Step 1: Write the proportion equation
   689,328 : 1,441,440 = 1,441,440 : x
2. Step 2: Convert to fraction form
   689,328/1,441,440 = 1,441,440/x
3. Step 3: Cross multiply
   689,328x = 1,441,440 × 1,441,440
4. Step 4: Simplify right side
   689,328x = 2,077,749,273,600
5. Step 5: Solve for x
   x = 2,077,749,273,600/689,328
6. Step 6: Final answer
   x = 3,014,166.37