Finding the Third Proportional to 139,754 and 301,640

Step by Step Solution

1. Step 1: Write the proportion equation
   139,754 : 301,640 = 301,640 : x
2. Step 2: Convert to fraction form
   139,754/301,640 = 301,640/x
3. Step 3: Cross multiply
   139,754x = 301,640 × 301,640
4. Step 4: Simplify right side
   139,754x = 90,986,689,600
5. Step 5: Solve for x
   x = 90,986,689,600/139,754
6. Step 6: Final answer
   x = 651,048.91