Finding the Third Proportional to 556,736 and 1,219,870

Step by Step Solution

1. Step 1: Write the proportion equation
   556,736 : 1,219,870 = 1,219,870 : x
2. Step 2: Convert to fraction form
   556,736/1,219,870 = 1,219,870/x
3. Step 3: Cross multiply
   556,736x = 1,219,870 × 1,219,870
4. Step 4: Simplify right side
   556,736x = 1,488,082,816,900
5. Step 5: Solve for x
   x = 1,488,082,816,900/556,736
6. Step 6: Final answer
   x = 2,672,869.76