Finding the Third Proportional to 9,778,920 and 21,260,368

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,920 : 21,260,368 = 21,260,368 : x
2. Step 2: Convert to fraction form
   9,778,920/21,260,368 = 21,260,368/x
3. Step 3: Cross multiply
   9,778,920x = 21,260,368 × 21,260,368
4. Step 4: Simplify right side
   9,778,920x = 452,003,247,495,424
5. Step 5: Solve for x
   x = 452,003,247,495,424/9,778,920
6. Step 6: Final answer
   x = 46,222,205.26