Finding the Third Proportional to 17,974,479,698 and 39,077,603,786

Step by Step Solution

1. Step 1: Write the proportion equation
   17,974,479,698 : 39,077,603,786 = 39,077,603,786 : x
2. Step 2: Convert to fraction form
   17,974,479,698/39,077,603,786 = 39,077,603,786/x
3. Step 3: Cross multiply
   17,974,479,698x = 39,077,603,786 × 39,077,603,786
4. Step 4: Simplify right side
   17,974,479,698x = 1,527,059,117,655,601,446,912
5. Step 5: Solve for x
   x = 1,527,059,117,655,601,446,912/17,974,479,698
6. Step 6: Final answer
   x = 84,957,069,317.87