Finding the Third Proportional to 553,177 and 854,335.50

Step by Step Solution

1. Step 1: Write the proportion equation
   553,177 : 854,335.50 = 854,335.50 : x
2. Step 2: Convert to fraction form
   553,177/854,335.50 = 854,335.50/x
3. Step 3: Cross multiply
   553,177x = 854,335.50 × 854,335.50
4. Step 4: Simplify right side
   553,177x = 729,889,146,560.25
5. Step 5: Solve for x
   x = 729,889,146,560.25/553,177
6. Step 6: Final answer
   x = 1,319,449.56