Finding the Third Proportional to 343,242 and 738,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,242 : 738,142.50 = 738,142.50 : x
2. Step 2: Convert to fraction form
   343,242/738,142.50 = 738,142.50/x
3. Step 3: Cross multiply
   343,242x = 738,142.50 × 738,142.50
4. Step 4: Simplify right side
   343,242x = 544,854,350,306.25
5. Step 5: Solve for x
   x = 544,854,350,306.25/343,242
6. Step 6: Final answer
   x = 1,587,376.69