Finding the Third Proportional to 4,311,870 and 9,388,716

Step by Step Solution

1. Step 1: Write the proportion equation
   4,311,870 : 9,388,716 = 9,388,716 : x
2. Step 2: Convert to fraction form
   4,311,870/9,388,716 = 9,388,716/x
3. Step 3: Cross multiply
   4,311,870x = 9,388,716 × 9,388,716
4. Step 4: Simplify right side
   4,311,870x = 88,147,988,128,656
5. Step 5: Solve for x
   x = 88,147,988,128,656/4,311,870
6. Step 6: Final answer
   x = 20,443,099.66