Finding the Third Proportional to 139,240.50 and 304,563

Step by Step Solution

1. Step 1: Write the proportion equation
   139,240.50 : 304,563 = 304,563 : x
2. Step 2: Convert to fraction form
   139,240.50/304,563 = 304,563/x
3. Step 3: Cross multiply
   139,240.50x = 304,563 × 304,563
4. Step 4: Simplify right side
   139,240.50x = 92,758,620,969
5. Step 5: Solve for x
   x = 92,758,620,969/139,240.50
6. Step 6: Final answer
   x = 666,175.58