Finding the Third Proportional to 1,378,709 and 1,985,766

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,709 : 1,985,766 = 1,985,766 : x
2. Step 2: Convert to fraction form
   1,378,709/1,985,766 = 1,985,766/x
3. Step 3: Cross multiply
   1,378,709x = 1,985,766 × 1,985,766
4. Step 4: Simplify right side
   1,378,709x = 3,943,266,606,756
5. Step 5: Solve for x
   x = 3,943,266,606,756/1,378,709
6. Step 6: Final answer
   x = 2,860,115.23