Finding the Third Proportional to 606,700 and 1,306,420

Step by Step Solution

1. Step 1: Write the proportion equation
   606,700 : 1,306,420 = 1,306,420 : x
2. Step 2: Convert to fraction form
   606,700/1,306,420 = 1,306,420/x
3. Step 3: Cross multiply
   606,700x = 1,306,420 × 1,306,420
4. Step 4: Simplify right side
   606,700x = 1,706,733,216,400
5. Step 5: Solve for x
   x = 1,706,733,216,400/606,700
6. Step 6: Final answer
   x = 2,813,141.94