Finding the Third Proportional to 851,711 and 1,309,141

Step by Step Solution

1. Step 1: Write the proportion equation
   851,711 : 1,309,141 = 1,309,141 : x
2. Step 2: Convert to fraction form
   851,711/1,309,141 = 1,309,141/x
3. Step 3: Cross multiply
   851,711x = 1,309,141 × 1,309,141
4. Step 4: Simplify right side
   851,711x = 1,713,850,157,881
5. Step 5: Solve for x
   x = 1,713,850,157,881/851,711
6. Step 6: Final answer
   x = 2,012,243.78