Finding the Third Proportional to 3,617,711 and 7,865,278

Step by Step Solution

1. Step 1: Write the proportion equation
   3,617,711 : 7,865,278 = 7,865,278 : x
2. Step 2: Convert to fraction form
   3,617,711/7,865,278 = 7,865,278/x
3. Step 3: Cross multiply
   3,617,711x = 7,865,278 × 7,865,278
4. Step 4: Simplify right side
   3,617,711x = 61,862,598,017,284
5. Step 5: Solve for x
   x = 61,862,598,017,284/3,617,711
6. Step 6: Final answer
   x = 17,099,928.11