Finding the Third Proportional to 18,159,813,498 and 25,561,875,499

Step by Step Solution

1. Step 1: Write the proportion equation
   18,159,813,498 : 25,561,875,499 = 25,561,875,499 : x
2. Step 2: Convert to fraction form
   18,159,813,498/25,561,875,499 = 25,561,875,499/x
3. Step 3: Cross multiply
   18,159,813,498x = 25,561,875,499 × 25,561,875,499
4. Step 4: Simplify right side
   18,159,813,498x = 653,409,479,026,376,441,856
5. Step 5: Solve for x
   x = 653,409,479,026,376,441,856/18,159,813,498
6. Step 6: Final answer
   x = 35,981,067,707.46