Finding the Third Proportional to 728,105.50 and 1,139,683

Step by Step Solution

1. Step 1: Write the proportion equation
   728,105.50 : 1,139,683 = 1,139,683 : x
2. Step 2: Convert to fraction form
   728,105.50/1,139,683 = 1,139,683/x
3. Step 3: Cross multiply
   728,105.50x = 1,139,683 × 1,139,683
4. Step 4: Simplify right side
   728,105.50x = 1,298,877,340,489
5. Step 5: Solve for x
   x = 1,298,877,340,489/728,105.50
6. Step 6: Final answer
   x = 1,783,913.65