Finding the Third Proportional to 139,055.50 and 304,247

Step by Step Solution

1. Step 1: Write the proportion equation
   139,055.50 : 304,247 = 304,247 : x
2. Step 2: Convert to fraction form
   139,055.50/304,247 = 304,247/x
3. Step 3: Cross multiply
   139,055.50x = 304,247 × 304,247
4. Step 4: Simplify right side
   139,055.50x = 92,566,237,009
5. Step 5: Solve for x
   x = 92,566,237,009/139,055.50
6. Step 6: Final answer
   x = 665,678.36