Finding the Third Proportional to 9,810,944,277 and 21,521,308,494

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810,944,277 : 21,521,308,494 = 21,521,308,494 : x
2. Step 2: Convert to fraction form
   9,810,944,277/21,521,308,494 = 21,521,308,494/x
3. Step 3: Cross multiply
   9,810,944,277x = 21,521,308,494 × 21,521,308,494
4. Step 4: Simplify right side
   9,810,944,277x = 463,166,719,293,916,577,792
5. Step 5: Solve for x
   x = 463,166,719,293,916,577,792/9,810,944,277
6. Step 6: Final answer
   x = 47,209,188,658.81