Finding the Third Proportional to 1,380,840 and 1,865,604

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,840 : 1,865,604 = 1,865,604 : x
2. Step 2: Convert to fraction form
   1,380,840/1,865,604 = 1,865,604/x
3. Step 3: Cross multiply
   1,380,840x = 1,865,604 × 1,865,604
4. Step 4: Simplify right side
   1,380,840x = 3,480,478,284,816
5. Step 5: Solve for x
   x = 3,480,478,284,816/1,380,840
6. Step 6: Final answer
   x = 2,520,551.46