Finding the Third Proportional to 564,808 and 1,216,400

Step by Step Solution

1. Step 1: Write the proportion equation
   564,808 : 1,216,400 = 1,216,400 : x
2. Step 2: Convert to fraction form
   564,808/1,216,400 = 1,216,400/x
3. Step 3: Cross multiply
   564,808x = 1,216,400 × 1,216,400
4. Step 4: Simplify right side
   564,808x = 1,479,628,960,000
5. Step 5: Solve for x
   x = 1,479,628,960,000/564,808
6. Step 6: Final answer
   x = 2,619,702.55