Finding the Third Proportional to 850,440 and 1,850,340

Step by Step Solution

1. Step 1: Write the proportion equation
   850,440 : 1,850,340 = 1,850,340 : x
2. Step 2: Convert to fraction form
   850,440/1,850,340 = 1,850,340/x
3. Step 3: Cross multiply
   850,440x = 1,850,340 × 1,850,340
4. Step 4: Simplify right side
   850,440x = 3,423,758,115,600
5. Step 5: Solve for x
   x = 3,423,758,115,600/850,440
6. Step 6: Final answer
   x = 4,025,866.75