Finding the Third Proportional to 4,585,644 and 9,995,316

Step by Step Solution

1. Step 1: Write the proportion equation
   4,585,644 : 9,995,316 = 9,995,316 : x
2. Step 2: Convert to fraction form
   4,585,644/9,995,316 = 9,995,316/x
3. Step 3: Cross multiply
   4,585,644x = 9,995,316 × 9,995,316
4. Step 4: Simplify right side
   4,585,644x = 99,906,341,939,856
5. Step 5: Solve for x
   x = 99,906,341,939,856/4,585,644
6. Step 6: Final answer
   x = 21,786,763.63