Finding the Third Proportional to 570,442 and 1,221,866

Step by Step Solution

1. Step 1: Write the proportion equation
   570,442 : 1,221,866 = 1,221,866 : x
2. Step 2: Convert to fraction form
   570,442/1,221,866 = 1,221,866/x
3. Step 3: Cross multiply
   570,442x = 1,221,866 × 1,221,866
4. Step 4: Simplify right side
   570,442x = 1,492,956,521,956
5. Step 5: Solve for x
   x = 1,492,956,521,956/570,442
6. Step 6: Final answer
   x = 2,617,192.50