Finding the Third Proportional to 81,912,380 and 175,981,180

Step by Step Solution

1. Step 1: Write the proportion equation
   81,912,380 : 175,981,180 = 175,981,180 : x
2. Step 2: Convert to fraction form
   81,912,380/175,981,180 = 175,981,180/x
3. Step 3: Cross multiply
   81,912,380x = 175,981,180 × 175,981,180
4. Step 4: Simplify right side
   81,912,380x = 30,969,375,714,192,400
5. Step 5: Solve for x
   x = 30,969,375,714,192,400/81,912,380
6. Step 6: Final answer
   x = 378,079,305.16