Finding the Third Proportional to 413,623 and 663,625.50

Step by Step Solution

1. Step 1: Write the proportion equation
   413,623 : 663,625.50 = 663,625.50 : x
2. Step 2: Convert to fraction form
   413,623/663,625.50 = 663,625.50/x
3. Step 3: Cross multiply
   413,623x = 663,625.50 × 663,625.50
4. Step 4: Simplify right side
   413,623x = 440,398,804,250.25
5. Step 5: Solve for x
   x = 440,398,804,250.25/413,623
6. Step 6: Final answer
   x = 1,064,734.81