Finding the Third Proportional to 556,228 and 1,216,996

Step by Step Solution

1. Step 1: Write the proportion equation
   556,228 : 1,216,996 = 1,216,996 : x
2. Step 2: Convert to fraction form
   556,228/1,216,996 = 1,216,996/x
3. Step 3: Cross multiply
   556,228x = 1,216,996 × 1,216,996
4. Step 4: Simplify right side
   556,228x = 1,481,079,264,016
5. Step 5: Solve for x
   x = 1,481,079,264,016/556,228
6. Step 6: Final answer
   x = 2,662,719.72