Finding the Third Proportional to 356,582 and 783,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,582 : 783,147.50 = 783,147.50 : x
2. Step 2: Convert to fraction form
   356,582/783,147.50 = 783,147.50/x
3. Step 3: Cross multiply
   356,582x = 783,147.50 × 783,147.50
4. Step 4: Simplify right side
   356,582x = 613,320,006,756.25
5. Step 5: Solve for x
   x = 613,320,006,756.25/356,582
6. Step 6: Final answer
   x = 1,719,997.10