Finding the Third Proportional to 9,778,922 and 21,260,372

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,922 : 21,260,372 = 21,260,372 : x
2. Step 2: Convert to fraction form
   9,778,922/21,260,372 = 21,260,372/x
3. Step 3: Cross multiply
   9,778,922x = 21,260,372 × 21,260,372
4. Step 4: Simplify right side
   9,778,922x = 452,003,417,578,384
5. Step 5: Solve for x
   x = 452,003,417,578,384/9,778,922
6. Step 6: Final answer
   x = 46,222,213.20