Finding the Third Proportional to 1,378,800 and 1,985,880

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,800 : 1,985,880 = 1,985,880 : x
2. Step 2: Convert to fraction form
   1,378,800/1,985,880 = 1,985,880/x
3. Step 3: Cross multiply
   1,378,800x = 1,985,880 × 1,985,880
4. Step 4: Simplify right side
   1,378,800x = 3,943,719,374,400
5. Step 5: Solve for x
   x = 3,943,719,374,400/1,378,800
6. Step 6: Final answer
   x = 2,860,254.84