Finding the Third Proportional to 9,778,926 and 21,260,380

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,926 : 21,260,380 = 21,260,380 : x
2. Step 2: Convert to fraction form
   9,778,926/21,260,380 = 21,260,380/x
3. Step 3: Cross multiply
   9,778,926x = 21,260,380 × 21,260,380
4. Step 4: Simplify right side
   9,778,926x = 452,003,757,744,400
5. Step 5: Solve for x
   x = 452,003,757,744,400/9,778,926
6. Step 6: Final answer
   x = 46,222,229.08