Finding the Third Proportional to 550,063.50 and 875,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,063.50 : 875,215.50 = 875,215.50 : x
2. Step 2: Convert to fraction form
   550,063.50/875,215.50 = 875,215.50/x
3. Step 3: Cross multiply
   550,063.50x = 875,215.50 × 875,215.50
4. Step 4: Simplify right side
   550,063.50x = 766,002,171,440.25
5. Step 5: Solve for x
   x = 766,002,171,440.25/550,063.50
6. Step 6: Final answer
   x = 1,392,570.44