Finding the Third Proportional to 127,816.31 and 276,787.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127,816.31 : 276,787.69 = 276,787.69 : x
2. Step 2: Convert to fraction form
   127,816.31/276,787.69 = 276,787.69/x
3. Step 3: Cross multiply
   127,816.31x = 276,787.69 × 276,787.69
4. Step 4: Simplify right side
   127,816.31x = 76,611,423,951.60
5. Step 5: Solve for x
   x = 76,611,423,951.60/127,816.31
6. Step 6: Final answer
   x = 599,386.90