Finding the Third Proportional to 443,444.75 and 685,114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,444.75 : 685,114.50 = 685,114.50 : x
2. Step 2: Convert to fraction form
   443,444.75/685,114.50 = 685,114.50/x
3. Step 3: Cross multiply
   443,444.75x = 685,114.50 × 685,114.50
4. Step 4: Simplify right side
   443,444.75x = 469,381,878,110.25
5. Step 5: Solve for x
   x = 469,381,878,110.25/443,444.75
6. Step 6: Final answer
   x = 1,058,490.10