Finding the Third Proportional to 536,439 and 804,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   536,439 : 804,670.50 = 804,670.50 : x
2. Step 2: Convert to fraction form
   536,439/804,670.50 = 804,670.50/x
3. Step 3: Cross multiply
   536,439x = 804,670.50 × 804,670.50
4. Step 4: Simplify right side
   536,439x = 647,494,613,570.25
5. Step 5: Solve for x
   x = 647,494,613,570.25/536,439
6. Step 6: Final answer
   x = 1,207,023.75