Finding the Third Proportional to 687,098 and 1,069,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   687,098 : 1,069,910.50 = 1,069,910.50 : x
2. Step 2: Convert to fraction form
   687,098/1,069,910.50 = 1,069,910.50/x
3. Step 3: Cross multiply
   687,098x = 1,069,910.50 × 1,069,910.50
4. Step 4: Simplify right side
   687,098x = 1,144,708,478,010.25
5. Step 5: Solve for x
   x = 1,144,708,478,010.25/687,098
6. Step 6: Final answer
   x = 1,666,004.67