Finding the Third Proportional to 120,830,780 and 178,981,146

Step by Step Solution

1. Step 1: Write the proportion equation
   120,830,780 : 178,981,146 = 178,981,146 : x
2. Step 2: Convert to fraction form
   120,830,780/178,981,146 = 178,981,146/x
3. Step 3: Cross multiply
   120,830,780x = 178,981,146 × 178,981,146
4. Step 4: Simplify right side
   120,830,780x = 32,034,250,623,473,316
5. Step 5: Solve for x
   x = 32,034,250,623,473,316/120,830,780
6. Step 6: Final answer
   x = 265,116,641.83