Finding the Third Proportional to 331,245 and 513,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,245 : 513,862.50 = 513,862.50 : x
2. Step 2: Convert to fraction form
   331,245/513,862.50 = 513,862.50/x
3. Step 3: Cross multiply
   331,245x = 513,862.50 × 513,862.50
4. Step 4: Simplify right side
   331,245x = 264,054,668,906.25
5. Step 5: Solve for x
   x = 264,054,668,906.25/331,245
6. Step 6: Final answer
   x = 797,158.20