Finding the Third Proportional to 687,646 and 1,051,236

Step by Step Solution

1. Step 1: Write the proportion equation
   687,646 : 1,051,236 = 1,051,236 : x
2. Step 2: Convert to fraction form
   687,646/1,051,236 = 1,051,236/x
3. Step 3: Cross multiply
   687,646x = 1,051,236 × 1,051,236
4. Step 4: Simplify right side
   687,646x = 1,105,097,127,696
5. Step 5: Solve for x
   x = 1,105,097,127,696/687,646
6. Step 6: Final answer
   x = 1,607,072.72