Finding the Third Proportional to 687,116 and 1,069,938

Step by Step Solution

1. Step 1: Write the proportion equation
   687,116 : 1,069,938 = 1,069,938 : x
2. Step 2: Convert to fraction form
   687,116/1,069,938 = 1,069,938/x
3. Step 3: Cross multiply
   687,116x = 1,069,938 × 1,069,938
4. Step 4: Simplify right side
   687,116x = 1,144,767,323,844
5. Step 5: Solve for x
   x = 1,144,767,323,844/687,116
6. Step 6: Final answer
   x = 1,666,046.67