Finding the Third Proportional to 360,144 and 772,774.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,144 : 772,774.50 = 772,774.50 : x
2. Step 2: Convert to fraction form
   360,144/772,774.50 = 772,774.50/x
3. Step 3: Cross multiply
   360,144x = 772,774.50 × 772,774.50
4. Step 4: Simplify right side
   360,144x = 597,180,427,850.25
5. Step 5: Solve for x
   x = 597,180,427,850.25/360,144
6. Step 6: Final answer
   x = 1,658,171.25