Finding the Third Proportional to 4,687,884 and 9,951,312

Step by Step Solution

1. Step 1: Write the proportion equation
   4,687,884 : 9,951,312 = 9,951,312 : x
2. Step 2: Convert to fraction form
   4,687,884/9,951,312 = 9,951,312/x
3. Step 3: Cross multiply
   4,687,884x = 9,951,312 × 9,951,312
4. Step 4: Simplify right side
   4,687,884x = 99,028,610,521,344
5. Step 5: Solve for x
   x = 99,028,610,521,344/4,687,884
6. Step 6: Final answer
   x = 21,124,373.07