Finding the Third Proportional to 139,093 and 300,359

Step by Step Solution

1. Step 1: Write the proportion equation
   139,093 : 300,359 = 300,359 : x
2. Step 2: Convert to fraction form
   139,093/300,359 = 300,359/x
3. Step 3: Cross multiply
   139,093x = 300,359 × 300,359
4. Step 4: Simplify right side
   139,093x = 90,215,528,881
5. Step 5: Solve for x
   x = 90,215,528,881/139,093
6. Step 6: Final answer
   x = 648,598.63