Finding the Third Proportional to 250,506 and 388,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,506 : 388,489.50 = 388,489.50 : x
2. Step 2: Convert to fraction form
   250,506/388,489.50 = 388,489.50/x
3. Step 3: Cross multiply
   250,506x = 388,489.50 × 388,489.50
4. Step 4: Simplify right side
   250,506x = 150,924,091,610.25
5. Step 5: Solve for x
   x = 150,924,091,610.25/250,506
6. Step 6: Final answer
   x = 602,476.95