Finding the Third Proportional to 139,528 and 301,408

Step by Step Solution

1. Step 1: Write the proportion equation
   139,528 : 301,408 = 301,408 : x
2. Step 2: Convert to fraction form
   139,528/301,408 = 301,408/x
3. Step 3: Cross multiply
   139,528x = 301,408 × 301,408
4. Step 4: Simplify right side
   139,528x = 90,846,782,464
5. Step 5: Solve for x
   x = 90,846,782,464/139,528
6. Step 6: Final answer
   x = 651,100.73