Finding the Third Proportional to 639,124 and 1,017,464

Step by Step Solution

1. Step 1: Write the proportion equation
   639,124 : 1,017,464 = 1,017,464 : x
2. Step 2: Convert to fraction form
   639,124/1,017,464 = 1,017,464/x
3. Step 3: Cross multiply
   639,124x = 1,017,464 × 1,017,464
4. Step 4: Simplify right side
   639,124x = 1,035,232,991,296
5. Step 5: Solve for x
   x = 1,035,232,991,296/639,124
6. Step 6: Final answer
   x = 1,619,768.61