Finding the Third Proportional to 81,867,647 and 179,117,680

Step by Step Solution

1. Step 1: Write the proportion equation
   81,867,647 : 179,117,680 = 179,117,680 : x
2. Step 2: Convert to fraction form
   81,867,647/179,117,680 = 179,117,680/x
3. Step 3: Cross multiply
   81,867,647x = 179,117,680 × 179,117,680
4. Step 4: Simplify right side
   81,867,647x = 32,083,143,288,582,400
5. Step 5: Solve for x
   x = 32,083,143,288,582,400/81,867,647
6. Step 6: Final answer
   x = 391,890,379.95