Finding the Third Proportional to 139,152 and 304,560

Step by Step Solution

1. Step 1: Write the proportion equation
   139,152 : 304,560 = 304,560 : x
2. Step 2: Convert to fraction form
   139,152/304,560 = 304,560/x
3. Step 3: Cross multiply
   139,152x = 304,560 × 304,560
4. Step 4: Simplify right side
   139,152x = 92,756,793,600
5. Step 5: Solve for x
   x = 92,756,793,600/139,152
6. Step 6: Final answer
   x = 666,586.13