Finding the Third Proportional to 139,138 and 300,964

Step by Step Solution

1. Step 1: Write the proportion equation
   139,138 : 300,964 = 300,964 : x
2. Step 2: Convert to fraction form
   139,138/300,964 = 300,964/x
3. Step 3: Cross multiply
   139,138x = 300,964 × 300,964
4. Step 4: Simplify right side
   139,138x = 90,579,329,296
5. Step 5: Solve for x
   x = 90,579,329,296/139,138
6. Step 6: Final answer
   x = 651,003.53