Finding the Third Proportional to 3,406,557 and 7,475,211

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406,557 : 7,475,211 = 7,475,211 : x
2. Step 2: Convert to fraction form
   3,406,557/7,475,211 = 7,475,211/x
3. Step 3: Cross multiply
   3,406,557x = 7,475,211 × 7,475,211
4. Step 4: Simplify right side
   3,406,557x = 55,878,779,494,521
5. Step 5: Solve for x
   x = 55,878,779,494,521/3,406,557
6. Step 6: Final answer
   x = 16,403,300.90