Finding the Third Proportional to 58,870,872 and 128,685,744

Step by Step Solution

1. Step 1: Write the proportion equation
   58,870,872 : 128,685,744 = 128,685,744 : x
2. Step 2: Convert to fraction form
   58,870,872/128,685,744 = 128,685,744/x
3. Step 3: Cross multiply
   58,870,872x = 128,685,744 × 128,685,744
4. Step 4: Simplify right side
   58,870,872x = 16,560,020,708,833,536
5. Step 5: Solve for x
   x = 16,560,020,708,833,536/58,870,872
6. Step 6: Final answer
   x = 281,293,959.92