Finding the Third Proportional to 563,886 and 1,215,804

Step by Step Solution

1. Step 1: Write the proportion equation
   563,886 : 1,215,804 = 1,215,804 : x
2. Step 2: Convert to fraction form
   563,886/1,215,804 = 1,215,804/x
3. Step 3: Cross multiply
   563,886x = 1,215,804 × 1,215,804
4. Step 4: Simplify right side
   563,886x = 1,478,179,366,416
5. Step 5: Solve for x
   x = 1,478,179,366,416/563,886
6. Step 6: Final answer
   x = 2,621,415.26