Finding the Third Proportional to 3,990,902 and 8,754,385

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990,902 : 8,754,385 = 8,754,385 : x
2. Step 2: Convert to fraction form
   3,990,902/8,754,385 = 8,754,385/x
3. Step 3: Cross multiply
   3,990,902x = 8,754,385 × 8,754,385
4. Step 4: Simplify right side
   3,990,902x = 76,639,256,728,225
5. Step 5: Solve for x
   x = 76,639,256,728,225/3,990,902
6. Step 6: Final answer
   x = 19,203,492.53