Finding the Third Proportional to 4,978,850 and 10,921,540

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978,850 : 10,921,540 = 10,921,540 : x
2. Step 2: Convert to fraction form
   4,978,850/10,921,540 = 10,921,540/x
3. Step 3: Cross multiply
   4,978,850x = 10,921,540 × 10,921,540
4. Step 4: Simplify right side
   4,978,850x = 119,280,035,971,600
5. Step 5: Solve for x
   x = 119,280,035,971,600/4,978,850
6. Step 6: Final answer
   x = 23,957,346.77