Finding the Third Proportional to 138,764 and 300,858

Step by Step Solution

1. Step 1: Write the proportion equation
   138,764 : 300,858 = 300,858 : x
2. Step 2: Convert to fraction form
   138,764/300,858 = 300,858/x
3. Step 3: Cross multiply
   138,764x = 300,858 × 300,858
4. Step 4: Simplify right side
   138,764x = 90,515,536,164
5. Step 5: Solve for x
   x = 90,515,536,164/138,764
6. Step 6: Final answer
   x = 652,298.41