Finding the Third Proportional to 684,712 and 1,068,521

Step by Step Solution

1. Step 1: Write the proportion equation
   684,712 : 1,068,521 = 1,068,521 : x
2. Step 2: Convert to fraction form
   684,712/1,068,521 = 1,068,521/x
3. Step 3: Cross multiply
   684,712x = 1,068,521 × 1,068,521
4. Step 4: Simplify right side
   684,712x = 1,141,737,127,441
5. Step 5: Solve for x
   x = 1,141,737,127,441/684,712
6. Step 6: Final answer
   x = 1,667,470.60