Finding the Third Proportional to 1,338,780 and 1,872,540

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,780 : 1,872,540 = 1,872,540 : x
2. Step 2: Convert to fraction form
   1,338,780/1,872,540 = 1,872,540/x
3. Step 3: Cross multiply
   1,338,780x = 1,872,540 × 1,872,540
4. Step 4: Simplify right side
   1,338,780x = 3,506,406,051,600
5. Step 5: Solve for x
   x = 3,506,406,051,600/1,338,780
6. Step 6: Final answer
   x = 2,619,105.49