Finding the Third Proportional to 309,074 and 662,506

Step by Step Solution

1. Step 1: Write the proportion equation
   309,074 : 662,506 = 662,506 : x
2. Step 2: Convert to fraction form
   309,074/662,506 = 662,506/x
3. Step 3: Cross multiply
   309,074x = 662,506 × 662,506
4. Step 4: Simplify right side
   309,074x = 438,914,200,036
5. Step 5: Solve for x
   x = 438,914,200,036/309,074
6. Step 6: Final answer
   x = 1,420,094.22