Finding the Third Proportional to 1,380,842 and 1,865,607

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,842 : 1,865,607 = 1,865,607 : x
2. Step 2: Convert to fraction form
   1,380,842/1,865,607 = 1,865,607/x
3. Step 3: Cross multiply
   1,380,842x = 1,865,607 × 1,865,607
4. Step 4: Simplify right side
   1,380,842x = 3,480,489,478,449
5. Step 5: Solve for x
   x = 3,480,489,478,449/1,380,842
6. Step 6: Final answer
   x = 2,520,555.92