Finding the Third Proportional to 82,204,486 and 178,880,216

Step by Step Solution

1. Step 1: Write the proportion equation
   82,204,486 : 178,880,216 = 178,880,216 : x
2. Step 2: Convert to fraction form
   82,204,486/178,880,216 = 178,880,216/x
3. Step 3: Cross multiply
   82,204,486x = 178,880,216 × 178,880,216
4. Step 4: Simplify right side
   82,204,486x = 31,998,131,676,206,656
5. Step 5: Solve for x
   x = 31,998,131,676,206,656/82,204,486
6. Step 6: Final answer
   x = 389,250,431.86