Finding the Third Proportional to 9,778,916 and 21,260,360

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,916 : 21,260,360 = 21,260,360 : x
2. Step 2: Convert to fraction form
   9,778,916/21,260,360 = 21,260,360/x
3. Step 3: Cross multiply
   9,778,916x = 21,260,360 × 21,260,360
4. Step 4: Simplify right side
   9,778,916x = 452,002,907,329,600
5. Step 5: Solve for x
   x = 452,002,907,329,600/9,778,916
6. Step 6: Final answer
   x = 46,222,189.38