Finding the Third Proportional to 639,500 and 1,381,464

Step by Step Solution

1. Step 1: Write the proportion equation
   639,500 : 1,381,464 = 1,381,464 : x
2. Step 2: Convert to fraction form
   639,500/1,381,464 = 1,381,464/x
3. Step 3: Cross multiply
   639,500x = 1,381,464 × 1,381,464
4. Step 4: Simplify right side
   639,500x = 1,908,442,783,296
5. Step 5: Solve for x
   x = 1,908,442,783,296/639,500
6. Step 6: Final answer
   x = 2,984,273.31