Finding the Third Proportional to 248,967 and 388,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,967 : 388,996.50 = 388,996.50 : x
2. Step 2: Convert to fraction form
   248,967/388,996.50 = 388,996.50/x
3. Step 3: Cross multiply
   248,967x = 388,996.50 × 388,996.50
4. Step 4: Simplify right side
   248,967x = 151,318,277,012.25
5. Step 5: Solve for x
   x = 151,318,277,012.25/248,967
6. Step 6: Final answer
   x = 607,784.47