Finding the Third Proportional to 10,438,132,320,865 and 21,173,895,051,564

Step by Step Solution

1. Step 1: Write the proportion equation
   10,438,132,320,865 : 21,173,895,051,564 = 21,173,895,051,564 : x
2. Step 2: Convert to fraction form
   10,438,132,320,865/21,173,895,051,564 = 21,173,895,051,564/x
3. Step 3: Cross multiply
   10,438,132,320,865x = 21,173,895,051,564 × 21,173,895,051,564
4. Step 4: Simplify right side
   10,438,132,320,865x = 448,333,831,654,646,437,023,580,160
5. Step 5: Solve for x
   x = 448,333,831,654,646,437,023,580,160/10,438,132,320,865
6. Step 6: Final answer
   x = 42,951,537,485,155.52