Finding the Third Proportional to 10,438,132,320,490 and 21,173,895,050,885

Step by Step Solution

1. Step 1: Write the proportion equation
   10,438,132,320,490 : 21,173,895,050,885 = 21,173,895,050,885 : x
2. Step 2: Convert to fraction form
   10,438,132,320,490/21,173,895,050,885 = 21,173,895,050,885/x
3. Step 3: Cross multiply
   10,438,132,320,490x = 21,173,895,050,885 × 21,173,895,050,885
4. Step 4: Simplify right side
   10,438,132,320,490x = 448,333,831,625,892,283,811,889,152
5. Step 5: Solve for x
   x = 448,333,831,625,892,283,811,889,152/10,438,132,320,490
6. Step 6: Final answer
   x = 42,951,537,483,943.88