Finding the Third Proportional to 492,156 and 771,039

Step by Step Solution

1. Step 1: Write the proportion equation
   492,156 : 771,039 = 771,039 : x
2. Step 2: Convert to fraction form
   492,156/771,039 = 771,039/x
3. Step 3: Cross multiply
   492,156x = 771,039 × 771,039
4. Step 4: Simplify right side
   492,156x = 594,501,139,521
5. Step 5: Solve for x
   x = 594,501,139,521/492,156
6. Step 6: Final answer
   x = 1,207,952.64