Finding the Third Proportional to 368,388 and 550,307.25

Step by Step Solution

1. Step 1: Write the proportion equation
   368,388 : 550,307.25 = 550,307.25 : x
2. Step 2: Convert to fraction form
   368,388/550,307.25 = 550,307.25/x
3. Step 3: Cross multiply
   368,388x = 550,307.25 × 550,307.25
4. Step 4: Simplify right side
   368,388x = 302,838,069,402.56
5. Step 5: Solve for x
   x = 302,838,069,402.56/368,388
6. Step 6: Final answer
   x = 822,062.80