Finding the Third Proportional to 6,406,656 and 8,629,344

Step by Step Solution

1. Step 1: Write the proportion equation
   6,406,656 : 8,629,344 = 8,629,344 : x
2. Step 2: Convert to fraction form
   6,406,656/8,629,344 = 8,629,344/x
3. Step 3: Cross multiply
   6,406,656x = 8,629,344 × 8,629,344
4. Step 4: Simplify right side
   6,406,656x = 74,465,577,870,336
5. Step 5: Solve for x
   x = 74,465,577,870,336/6,406,656
6. Step 6: Final answer
   x = 11,623,158.46