Finding the Third Proportional to 552,626.50 and 878,758

Step by Step Solution

1. Step 1: Write the proportion equation
   552,626.50 : 878,758 = 878,758 : x
2. Step 2: Convert to fraction form
   552,626.50/878,758 = 878,758/x
3. Step 3: Cross multiply
   552,626.50x = 878,758 × 878,758
4. Step 4: Simplify right side
   552,626.50x = 772,215,622,564
5. Step 5: Solve for x
   x = 772,215,622,564/552,626.50
6. Step 6: Final answer
   x = 1,397,355.40