Finding the Third Proportional to 508,075.50 and 779,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   508,075.50 : 779,680.50 = 779,680.50 : x
2. Step 2: Convert to fraction form
   508,075.50/779,680.50 = 779,680.50/x
3. Step 3: Cross multiply
   508,075.50x = 779,680.50 × 779,680.50
4. Step 4: Simplify right side
   508,075.50x = 607,901,682,080.25
5. Step 5: Solve for x
   x = 607,901,682,080.25/508,075.50
6. Step 6: Final answer
   x = 1,196,479.03