Finding the Third Proportional to 686,864.25 and 1,009,719

Step by Step Solution

1. Step 1: Write the proportion equation
   686,864.25 : 1,009,719 = 1,009,719 : x
2. Step 2: Convert to fraction form
   686,864.25/1,009,719 = 1,009,719/x
3. Step 3: Cross multiply
   686,864.25x = 1,009,719 × 1,009,719
4. Step 4: Simplify right side
   686,864.25x = 1,019,532,458,961
5. Step 5: Solve for x
   x = 1,019,532,458,961/686,864.25
6. Step 6: Final answer
   x = 1,484,328.90