Finding the Third Proportional to 872,404 and 1,279,804

Step by Step Solution

1. Step 1: Write the proportion equation
   872,404 : 1,279,804 = 1,279,804 : x
2. Step 2: Convert to fraction form
   872,404/1,279,804 = 1,279,804/x
3. Step 3: Cross multiply
   872,404x = 1,279,804 × 1,279,804
4. Step 4: Simplify right side
   872,404x = 1,637,898,278,416
5. Step 5: Solve for x
   x = 1,637,898,278,416/872,404
6. Step 6: Final answer
   x = 1,877,453.88