Finding the Third Proportional to 360,128 and 776,076

Step by Step Solution

1. Step 1: Write the proportion equation
   360,128 : 776,076 = 776,076 : x
2. Step 2: Convert to fraction form
   360,128/776,076 = 776,076/x
3. Step 3: Cross multiply
   360,128x = 776,076 × 776,076
4. Step 4: Simplify right side
   360,128x = 602,293,957,776
5. Step 5: Solve for x
   x = 602,293,957,776/360,128
6. Step 6: Final answer
   x = 1,672,444.12