Finding the Third Proportional to 3,918,384 and 5,643,846

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918,384 : 5,643,846 = 5,643,846 : x
2. Step 2: Convert to fraction form
   3,918,384/5,643,846 = 5,643,846/x
3. Step 3: Cross multiply
   3,918,384x = 5,643,846 × 5,643,846
4. Step 4: Simplify right side
   3,918,384x = 31,852,997,671,716
5. Step 5: Solve for x
   x = 31,852,997,671,716/3,918,384
6. Step 6: Final answer
   x = 8,129,115.90