Finding the Third Proportional to 4,431,912 and 9,525,870

Step by Step Solution

1. Step 1: Write the proportion equation
   4,431,912 : 9,525,870 = 9,525,870 : x
2. Step 2: Convert to fraction form
   4,431,912/9,525,870 = 9,525,870/x
3. Step 3: Cross multiply
   4,431,912x = 9,525,870 × 9,525,870
4. Step 4: Simplify right side
   4,431,912x = 90,742,199,256,900
5. Step 5: Solve for x
   x = 90,742,199,256,900/4,431,912
6. Step 6: Final answer
   x = 20,474,729.47