Finding the Third Proportional to 520,749 and 789,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,749 : 789,871.50 = 789,871.50 : x
2. Step 2: Convert to fraction form
   520,749/789,871.50 = 789,871.50/x
3. Step 3: Cross multiply
   520,749x = 789,871.50 × 789,871.50
4. Step 4: Simplify right side
   520,749x = 623,896,986,512.25
5. Step 5: Solve for x
   x = 623,896,986,512.25/520,749
6. Step 6: Final answer
   x = 1,198,076.21