Finding the Third Proportional to 642,748 and 1,227,176

Step by Step Solution

1. Step 1: Write the proportion equation
   642,748 : 1,227,176 = 1,227,176 : x
2. Step 2: Convert to fraction form
   642,748/1,227,176 = 1,227,176/x
3. Step 3: Cross multiply
   642,748x = 1,227,176 × 1,227,176
4. Step 4: Simplify right side
   642,748x = 1,505,960,934,976
5. Step 5: Solve for x
   x = 1,505,960,934,976/642,748
6. Step 6: Final answer
   x = 2,343,003.69