Finding the Third Proportional to 89,834,799,486 and 139,546,520,197.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,834,799,486 : 139,546,520,197.50 = 139,546,520,197.50 : x
2. Step 2: Convert to fraction form
   89,834,799,486/139,546,520,197.50 = 139,546,520,197.50/x
3. Step 3: Cross multiply
   89,834,799,486x = 139,546,520,197.50 × 139,546,520,197.50
4. Step 4: Simplify right side
   89,834,799,486x = 19,473,231,299,231,277,383,680
5. Step 5: Solve for x
   x = 19,473,231,299,231,277,383,680/89,834,799,486
6. Step 6: Final answer
   x = 216,767,125,998.50