Finding the Third Proportional to 17,974,479,696 and 39,077,603,782.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,974,479,696 : 39,077,603,782.50 = 39,077,603,782.50 : x
2. Step 2: Convert to fraction form
   17,974,479,696/39,077,603,782.50 = 39,077,603,782.50/x
3. Step 3: Cross multiply
   17,974,479,696x = 39,077,603,782.50 × 39,077,603,782.50
4. Step 4: Simplify right side
   17,974,479,696x = 1,527,059,117,382,058,377,216
5. Step 5: Solve for x
   x = 1,527,059,117,382,058,377,216/17,974,479,696
6. Step 6: Final answer
   x = 84,957,069,312.10