Finding the Third Proportional to 758,228 and 1,140,418

Step by Step Solution

1. Step 1: Write the proportion equation
   758,228 : 1,140,418 = 1,140,418 : x
2. Step 2: Convert to fraction form
   758,228/1,140,418 = 1,140,418/x
3. Step 3: Cross multiply
   758,228x = 1,140,418 × 1,140,418
4. Step 4: Simplify right side
   758,228x = 1,300,553,214,724
5. Step 5: Solve for x
   x = 1,300,553,214,724/758,228
6. Step 6: Final answer
   x = 1,715,253.48