Finding the Third Proportional to 728,101.50 and 1,139,679

Step by Step Solution

1. Step 1: Write the proportion equation
   728,101.50 : 1,139,679 = 1,139,679 : x
2. Step 2: Convert to fraction form
   728,101.50/1,139,679 = 1,139,679/x
3. Step 3: Cross multiply
   728,101.50x = 1,139,679 × 1,139,679
4. Step 4: Simplify right side
   728,101.50x = 1,298,868,223,041
5. Step 5: Solve for x
   x = 1,298,868,223,041/728,101.50
6. Step 6: Final answer
   x = 1,783,910.93