Finding the Third Proportional to 129,622,680 and 281,499,768

Step by Step Solution

1. Step 1: Write the proportion equation
   129,622,680 : 281,499,768 = 281,499,768 : x
2. Step 2: Convert to fraction form
   129,622,680/281,499,768 = 281,499,768/x
3. Step 3: Cross multiply
   129,622,680x = 281,499,768 × 281,499,768
4. Step 4: Simplify right side
   129,622,680x = 79,242,119,384,053,824
5. Step 5: Solve for x
   x = 79,242,119,384,053,824/129,622,680
6. Step 6: Final answer
   x = 611,329,123.76