Finding the Third Proportional to 476,915.50 and 647,616.83

Step by Step Solution

1. Step 1: Write the proportion equation
   476,915.50 : 647,616.83 = 647,616.83 : x
2. Step 2: Convert to fraction form
   476,915.50/647,616.83 = 647,616.83/x
3. Step 3: Cross multiply
   476,915.50x = 647,616.83 × 647,616.83
4. Step 4: Simplify right side
   476,915.50x = 419,407,561,130.19
5. Step 5: Solve for x
   x = 419,407,561,130.19/476,915.50
6. Step 6: Final answer
   x = 879,416.92