Finding the Third Proportional to 550,494 and 850,790.25

Step by Step Solution

1. Step 1: Write the proportion equation
   550,494 : 850,790.25 = 850,790.25 : x
2. Step 2: Convert to fraction form
   550,494/850,790.25 = 850,790.25/x
3. Step 3: Cross multiply
   550,494x = 850,790.25 × 850,790.25
4. Step 4: Simplify right side
   550,494x = 723,844,049,495.06
5. Step 5: Solve for x
   x = 723,844,049,495.06/550,494
6. Step 6: Final answer
   x = 1,314,899.07