Finding the Third Proportional to 444,495 and 689,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   444,495 : 689,314.50 = 689,314.50 : x
2. Step 2: Convert to fraction form
   444,495/689,314.50 = 689,314.50/x
3. Step 3: Cross multiply
   444,495x = 689,314.50 × 689,314.50
4. Step 4: Simplify right side
   444,495x = 475,154,479,910.25
5. Step 5: Solve for x
   x = 475,154,479,910.25/444,495
6. Step 6: Final answer
   x = 1,068,975.98