Finding the Third Proportional to 550,399.50 and 875,626.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,399.50 : 875,626.50 = 875,626.50 : x
2. Step 2: Convert to fraction form
   550,399.50/875,626.50 = 875,626.50/x
3. Step 3: Cross multiply
   550,399.50x = 875,626.50 × 875,626.50
4. Step 4: Simplify right side
   550,399.50x = 766,721,767,502.25
5. Step 5: Solve for x
   x = 766,721,767,502.25/550,399.50
6. Step 6: Final answer
   x = 1,393,027.73