Finding the Third Proportional to 561,353 and 858,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,353 : 858,868.50 = 858,868.50 : x
2. Step 2: Convert to fraction form
   561,353/858,868.50 = 858,868.50/x
3. Step 3: Cross multiply
   561,353x = 858,868.50 × 858,868.50
4. Step 4: Simplify right side
   561,353x = 737,655,100,292.25
5. Step 5: Solve for x
   x = 737,655,100,292.25/561,353
6. Step 6: Final answer
   x = 1,314,066.37