Finding the Third Proportional to 1,280,978 and 2,772,332

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,978 : 2,772,332 = 2,772,332 : x
2. Step 2: Convert to fraction form
   1,280,978/2,772,332 = 2,772,332/x
3. Step 3: Cross multiply
   1,280,978x = 2,772,332 × 2,772,332
4. Step 4: Simplify right side
   1,280,978x = 7,685,824,718,224
5. Step 5: Solve for x
   x = 7,685,824,718,224/1,280,978
6. Step 6: Final answer
   x = 5,999,966.21