Finding the Third Proportional to 9,858,482,801 and 21,921,181,666

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858,482,801 : 21,921,181,666 = 21,921,181,666 : x
2. Step 2: Convert to fraction form
   9,858,482,801/21,921,181,666 = 21,921,181,666/x
3. Step 3: Cross multiply
   9,858,482,801x = 21,921,181,666 × 21,921,181,666
4. Step 4: Simplify right side
   9,858,482,801x = 480,538,205,633,774,551,040
5. Step 5: Solve for x
   x = 480,538,205,633,774,551,040/9,858,482,801
6. Step 6: Final answer
   x = 48,743,626,715.57