Finding the Third Proportional to 4,591,580 and 10,009,888

Step by Step Solution

1. Step 1: Write the proportion equation
   4,591,580 : 10,009,888 = 10,009,888 : x
2. Step 2: Convert to fraction form
   4,591,580/10,009,888 = 10,009,888/x
3. Step 3: Cross multiply
   4,591,580x = 10,009,888 × 10,009,888
4. Step 4: Simplify right side
   4,591,580x = 100,197,857,772,544
5. Step 5: Solve for x
   x = 100,197,857,772,544/4,591,580
6. Step 6: Final answer
   x = 21,822,086.90