Finding the Third Proportional to 1,399,272 and 2,160,747

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,272 : 2,160,747 = 2,160,747 : x
2. Step 2: Convert to fraction form
   1,399,272/2,160,747 = 2,160,747/x
3. Step 3: Cross multiply
   1,399,272x = 2,160,747 × 2,160,747
4. Step 4: Simplify right side
   1,399,272x = 4,668,827,598,009
5. Step 5: Solve for x
   x = 4,668,827,598,009/1,399,272
6. Step 6: Final answer
   x = 3,336,611.89