Finding the Third Proportional to 3,961,646 and 8,680,486

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961,646 : 8,680,486 = 8,680,486 : x
2. Step 2: Convert to fraction form
   3,961,646/8,680,486 = 8,680,486/x
3. Step 3: Cross multiply
   3,961,646x = 8,680,486 × 8,680,486
4. Step 4: Simplify right side
   3,961,646x = 75,350,837,196,196
5. Step 5: Solve for x
   x = 75,350,837,196,196/3,961,646
6. Step 6: Final answer
   x = 19,020,083.37