Finding the Third Proportional to 315,378 and 476,347.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,378 : 476,347.50 = 476,347.50 : x
2. Step 2: Convert to fraction form
   315,378/476,347.50 = 476,347.50/x
3. Step 3: Cross multiply
   315,378x = 476,347.50 × 476,347.50
4. Step 4: Simplify right side
   315,378x = 226,906,940,756.25
5. Step 5: Solve for x
   x = 226,906,940,756.25/315,378
6. Step 6: Final answer
   x = 719,476.12