Finding the Third Proportional to 3,406,620 and 7,418,040

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406,620 : 7,418,040 = 7,418,040 : x
2. Step 2: Convert to fraction form
   3,406,620/7,418,040 = 7,418,040/x
3. Step 3: Cross multiply
   3,406,620x = 7,418,040 × 7,418,040
4. Step 4: Simplify right side
   3,406,620x = 55,027,317,441,600
5. Step 5: Solve for x
   x = 55,027,317,441,600/3,406,620
6. Step 6: Final answer
   x = 16,153,054.18