Finding the Third Proportional to 510,056.50 and 787,029.25

Step by Step Solution

1. Step 1: Write the proportion equation
   510,056.50 : 787,029.25 = 787,029.25 : x
2. Step 2: Convert to fraction form
   510,056.50/787,029.25 = 787,029.25/x
3. Step 3: Cross multiply
   510,056.50x = 787,029.25 × 787,029.25
4. Step 4: Simplify right side
   510,056.50x = 619,415,040,355.56
5. Step 5: Solve for x
   x = 619,415,040,355.56/510,056.50
6. Step 6: Final answer
   x = 1,214,404.76