Finding the Third Proportional to 9,778,962 and 21,240,792

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,962 : 21,240,792 = 21,240,792 : x
2. Step 2: Convert to fraction form
   9,778,962/21,240,792 = 21,240,792/x
3. Step 3: Cross multiply
   9,778,962x = 21,240,792 × 21,240,792
4. Step 4: Simplify right side
   9,778,962x = 451,171,244,787,264
5. Step 5: Solve for x
   x = 451,171,244,787,264/9,778,962
6. Step 6: Final answer
   x = 46,136,925.86