Finding the Third Proportional to 139,560 and 302,520

Step by Step Solution

1. Step 1: Write the proportion equation
   139,560 : 302,520 = 302,520 : x
2. Step 2: Convert to fraction form
   139,560/302,520 = 302,520/x
3. Step 3: Cross multiply
   139,560x = 302,520 × 302,520
4. Step 4: Simplify right side
   139,560x = 91,518,350,400
5. Step 5: Solve for x
   x = 91,518,350,400/139,560
6. Step 6: Final answer
   x = 655,763.47