Finding the Third Proportional to 656,818 and 1,418,420

Step by Step Solution

1. Step 1: Write the proportion equation
   656,818 : 1,418,420 = 1,418,420 : x
2. Step 2: Convert to fraction form
   656,818/1,418,420 = 1,418,420/x
3. Step 3: Cross multiply
   656,818x = 1,418,420 × 1,418,420
4. Step 4: Simplify right side
   656,818x = 2,011,915,296,400
5. Step 5: Solve for x
   x = 2,011,915,296,400/656,818
6. Step 6: Final answer
   x = 3,063,124.48