Finding the Third Proportional to 553,826 and 1,210,158

Step by Step Solution

1. Step 1: Write the proportion equation
   553,826 : 1,210,158 = 1,210,158 : x
2. Step 2: Convert to fraction form
   553,826/1,210,158 = 1,210,158/x
3. Step 3: Cross multiply
   553,826x = 1,210,158 × 1,210,158
4. Step 4: Simplify right side
   553,826x = 1,464,482,384,964
5. Step 5: Solve for x
   x = 1,464,482,384,964/553,826
6. Step 6: Final answer
   x = 2,644,300.53