Finding the Third Proportional to 4,621,588 and 9,973,906

Step by Step Solution

1. Step 1: Write the proportion equation
   4,621,588 : 9,973,906 = 9,973,906 : x
2. Step 2: Convert to fraction form
   4,621,588/9,973,906 = 9,973,906/x
3. Step 3: Cross multiply
   4,621,588x = 9,973,906 × 9,973,906
4. Step 4: Simplify right side
   4,621,588x = 99,478,800,896,836
5. Step 5: Solve for x
   x = 99,478,800,896,836/4,621,588
6. Step 6: Final answer
   x = 21,524,809.42