Finding the Third Proportional to 2,656,840 and 4,229,620

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656,840 : 4,229,620 = 4,229,620 : x
2. Step 2: Convert to fraction form
   2,656,840/4,229,620 = 4,229,620/x
3. Step 3: Cross multiply
   2,656,840x = 4,229,620 × 4,229,620
4. Step 4: Simplify right side
   2,656,840x = 17,889,685,344,400
5. Step 5: Solve for x
   x = 17,889,685,344,400/2,656,840
6. Step 6: Final answer
   x = 6,733,444.75