Finding the Third Proportional to 617,778 and 1,353,648

Step by Step Solution

1. Step 1: Write the proportion equation
   617,778 : 1,353,648 = 1,353,648 : x
2. Step 2: Convert to fraction form
   617,778/1,353,648 = 1,353,648/x
3. Step 3: Cross multiply
   617,778x = 1,353,648 × 1,353,648
4. Step 4: Simplify right side
   617,778x = 1,832,362,907,904
5. Step 5: Solve for x
   x = 1,832,362,907,904/617,778
6. Step 6: Final answer
   x = 2,966,054.00