Finding the Third Proportional to 551,084.50 and 779,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,084.50 : 779,997.50 = 779,997.50 : x
2. Step 2: Convert to fraction form
   551,084.50/779,997.50 = 779,997.50/x
3. Step 3: Cross multiply
   551,084.50x = 779,997.50 × 779,997.50
4. Step 4: Simplify right side
   551,084.50x = 608,396,100,006.25
5. Step 5: Solve for x
   x = 608,396,100,006.25/551,084.50
6. Step 6: Final answer
   x = 1,103,997.84