Finding the Third Proportional to 388,843.50 and 556,048.50

Step by Step Solution

1. Step 1: Write the proportion equation
   388,843.50 : 556,048.50 = 556,048.50 : x
2. Step 2: Convert to fraction form
   388,843.50/556,048.50 = 556,048.50/x
3. Step 3: Cross multiply
   388,843.50x = 556,048.50 × 556,048.50
4. Step 4: Simplify right side
   388,843.50x = 309,189,934,352.25
5. Step 5: Solve for x
   x = 309,189,934,352.25/388,843.50
6. Step 6: Final answer
   x = 795,152.64