Finding the Third Proportional to 4,687,886 and 9,951,316

Step by Step Solution

1. Step 1: Write the proportion equation
   4,687,886 : 9,951,316 = 9,951,316 : x
2. Step 2: Convert to fraction form
   4,687,886/9,951,316 = 9,951,316/x
3. Step 3: Cross multiply
   4,687,886x = 9,951,316 × 9,951,316
4. Step 4: Simplify right side
   4,687,886x = 99,028,690,131,856
5. Step 5: Solve for x
   x = 99,028,690,131,856/4,687,886
6. Step 6: Final answer
   x = 21,124,381.04