Finding the Third Proportional to 518,418 and 1,078,200

Step by Step Solution

1. Step 1: Write the proportion equation
   518,418 : 1,078,200 = 1,078,200 : x
2. Step 2: Convert to fraction form
   518,418/1,078,200 = 1,078,200/x
3. Step 3: Cross multiply
   518,418x = 1,078,200 × 1,078,200
4. Step 4: Simplify right side
   518,418x = 1,162,515,240,000
5. Step 5: Solve for x
   x = 1,162,515,240,000/518,418
6. Step 6: Final answer
   x = 2,242,428.39