Finding the Third Proportional to 550,642.50 and 807,768

Step by Step Solution

1. Step 1: Write the proportion equation
   550,642.50 : 807,768 = 807,768 : x
2. Step 2: Convert to fraction form
   550,642.50/807,768 = 807,768/x
3. Step 3: Cross multiply
   550,642.50x = 807,768 × 807,768
4. Step 4: Simplify right side
   550,642.50x = 652,489,141,824
5. Step 5: Solve for x
   x = 652,489,141,824/550,642.50
6. Step 6: Final answer
   x = 1,184,959.65