Finding the Third Proportional to 831,818 and 1,188,637

Step by Step Solution

1. Step 1: Write the proportion equation
   831,818 : 1,188,637 = 1,188,637 : x
2. Step 2: Convert to fraction form
   831,818/1,188,637 = 1,188,637/x
3. Step 3: Cross multiply
   831,818x = 1,188,637 × 1,188,637
4. Step 4: Simplify right side
   831,818x = 1,412,857,917,769
5. Step 5: Solve for x
   x = 1,412,857,917,769/831,818
6. Step 6: Final answer
   x = 1,698,518.09