Finding the Third Proportional to 647,038.50 and 1,405,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   647,038.50 : 1,405,855.50 = 1,405,855.50 : x
2. Step 2: Convert to fraction form
   647,038.50/1,405,855.50 = 1,405,855.50/x
3. Step 3: Cross multiply
   647,038.50x = 1,405,855.50 × 1,405,855.50
4. Step 4: Simplify right side
   647,038.50x = 1,976,429,686,880.25
5. Step 5: Solve for x
   x = 1,976,429,686,880.25/647,038.50
6. Step 6: Final answer
   x = 3,054,578.18