Finding the Third Proportional to 853,974 and 1,309,905

Step by Step Solution

1. Step 1: Write the proportion equation
   853,974 : 1,309,905 = 1,309,905 : x
2. Step 2: Convert to fraction form
   853,974/1,309,905 = 1,309,905/x
3. Step 3: Cross multiply
   853,974x = 1,309,905 × 1,309,905
4. Step 4: Simplify right side
   853,974x = 1,715,851,109,025
5. Step 5: Solve for x
   x = 1,715,851,109,025/853,974
6. Step 6: Final answer
   x = 2,009,254.51