Finding the Third Proportional to 550,075.50 and 875,278

Step by Step Solution

1. Step 1: Write the proportion equation
   550,075.50 : 875,278 = 875,278 : x
2. Step 2: Convert to fraction form
   550,075.50/875,278 = 875,278/x
3. Step 3: Cross multiply
   550,075.50x = 875,278 × 875,278
4. Step 4: Simplify right side
   550,075.50x = 766,111,577,284
5. Step 5: Solve for x
   x = 766,111,577,284/550,075.50
6. Step 6: Final answer
   x = 1,392,738.96