Finding the Third Proportional to 128,059,956 and 281,008,872

Step by Step Solution

1. Step 1: Write the proportion equation
   128,059,956 : 281,008,872 = 281,008,872 : x
2. Step 2: Convert to fraction form
   128,059,956/281,008,872 = 281,008,872/x
3. Step 3: Cross multiply
   128,059,956x = 281,008,872 × 281,008,872
4. Step 4: Simplify right side
   128,059,956x = 78,965,986,142,712,384
5. Step 5: Solve for x
   x = 78,965,986,142,712,384/128,059,956
6. Step 6: Final answer
   x = 616,632,932.02