Finding the Third Proportional to 553,734 and 867,510

Step by Step Solution

1. Step 1: Write the proportion equation
   553,734 : 867,510 = 867,510 : x
2. Step 2: Convert to fraction form
   553,734/867,510 = 867,510/x
3. Step 3: Cross multiply
   553,734x = 867,510 × 867,510
4. Step 4: Simplify right side
   553,734x = 752,573,600,100
5. Step 5: Solve for x
   x = 752,573,600,100/553,734
6. Step 6: Final answer
   x = 1,359,088.66