Finding the Third Proportional to 561,307.50 and 864,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,307.50 : 864,103.50 = 864,103.50 : x
2. Step 2: Convert to fraction form
   561,307.50/864,103.50 = 864,103.50/x
3. Step 3: Cross multiply
   561,307.50x = 864,103.50 × 864,103.50
4. Step 4: Simplify right side
   561,307.50x = 746,674,858,712.25
5. Step 5: Solve for x
   x = 746,674,858,712.25/561,307.50
6. Step 6: Final answer
   x = 1,330,242.08