Finding the Third Proportional to 120,830,786 and 178,981,150

Step by Step Solution

1. Step 1: Write the proportion equation
   120,830,786 : 178,981,150 = 178,981,150 : x
2. Step 2: Convert to fraction form
   120,830,786/178,981,150 = 178,981,150/x
3. Step 3: Cross multiply
   120,830,786x = 178,981,150 × 178,981,150
4. Step 4: Simplify right side
   120,830,786x = 32,034,252,055,322,500
5. Step 5: Solve for x
   x = 32,034,252,055,322,500/120,830,786
6. Step 6: Final answer
   x = 265,116,640.52