Finding the Third Proportional to 1,865,406 and 4,016,208

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,406 : 4,016,208 = 4,016,208 : x
2. Step 2: Convert to fraction form
   1,865,406/4,016,208 = 4,016,208/x
3. Step 3: Cross multiply
   1,865,406x = 4,016,208 × 4,016,208
4. Step 4: Simplify right side
   1,865,406x = 16,129,926,699,264
5. Step 5: Solve for x
   x = 16,129,926,699,264/1,865,406
6. Step 6: Final answer
   x = 8,646,871.89