Finding the Third Proportional to 1,499,240 and 3,172,360

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,240 : 3,172,360 = 3,172,360 : x
2. Step 2: Convert to fraction form
   1,499,240/3,172,360 = 3,172,360/x
3. Step 3: Cross multiply
   1,499,240x = 3,172,360 × 3,172,360
4. Step 4: Simplify right side
   1,499,240x = 10,063,867,969,600
5. Step 5: Solve for x
   x = 10,063,867,969,600/1,499,240
6. Step 6: Final answer
   x = 6,712,646.39