Finding the Third Proportional to 393,462 and 577,145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   393,462 : 577,145.25 = 577,145.25 : x
2. Step 2: Convert to fraction form
   393,462/577,145.25 = 577,145.25/x
3. Step 3: Cross multiply
   393,462x = 577,145.25 × 577,145.25
4. Step 4: Simplify right side
   393,462x = 333,096,639,597.56
5. Step 5: Solve for x
   x = 333,096,639,597.56/393,462
6. Step 6: Final answer
   x = 846,578.93