Finding the Third Proportional to 355,476.94 and 740,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,476.94 : 740,488.50 = 740,488.50 : x
2. Step 2: Convert to fraction form
   355,476.94/740,488.50 = 740,488.50/x
3. Step 3: Cross multiply
   355,476.94x = 740,488.50 × 740,488.50
4. Step 4: Simplify right side
   355,476.94x = 548,323,218,632.25
5. Step 5: Solve for x
   x = 548,323,218,632.25/355,476.94
6. Step 6: Final answer
   x = 1,542,500.12