Finding the Third Proportional to 9,858,482,796 and 21,921,181,656

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858,482,796 : 21,921,181,656 = 21,921,181,656 : x
2. Step 2: Convert to fraction form
   9,858,482,796/21,921,181,656 = 21,921,181,656/x
3. Step 3: Cross multiply
   9,858,482,796x = 21,921,181,656 × 21,921,181,656
4. Step 4: Simplify right side
   9,858,482,796x = 480,538,205,195,350,900,736
5. Step 5: Solve for x
   x = 480,538,205,195,350,900,736/9,858,482,796
6. Step 6: Final answer
   x = 48,743,626,695.82