Finding the Third Proportional to 3,990,152 and 8,298,760

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990,152 : 8,298,760 = 8,298,760 : x
2. Step 2: Convert to fraction form
   3,990,152/8,298,760 = 8,298,760/x
3. Step 3: Cross multiply
   3,990,152x = 8,298,760 × 8,298,760
4. Step 4: Simplify right side
   3,990,152x = 68,869,417,537,600
5. Step 5: Solve for x
   x = 68,869,417,537,600/3,990,152
6. Step 6: Final answer
   x = 17,259,848.13