Finding the Third Proportional to 836,900 and 1,216,470

Step by Step Solution

1. Step 1: Write the proportion equation
   836,900 : 1,216,470 = 1,216,470 : x
2. Step 2: Convert to fraction form
   836,900/1,216,470 = 1,216,470/x
3. Step 3: Cross multiply
   836,900x = 1,216,470 × 1,216,470
4. Step 4: Simplify right side
   836,900x = 1,479,799,260,900
5. Step 5: Solve for x
   x = 1,479,799,260,900/836,900
6. Step 6: Final answer
   x = 1,768,191.25