Finding the Third Proportional to 325,074.75 and 431,340

Step by Step Solution

1. Step 1: Write the proportion equation
   325,074.75 : 431,340 = 431,340 : x
2. Step 2: Convert to fraction form
   325,074.75/431,340 = 431,340/x
3. Step 3: Cross multiply
   325,074.75x = 431,340 × 431,340
4. Step 4: Simplify right side
   325,074.75x = 186,054,195,600
5. Step 5: Solve for x
   x = 186,054,195,600/325,074.75
6. Step 6: Final answer
   x = 572,342.81