Finding the Third Proportional to 642,755 and 1,227,189

Step by Step Solution

1. Step 1: Write the proportion equation
   642,755 : 1,227,189 = 1,227,189 : x
2. Step 2: Convert to fraction form
   642,755/1,227,189 = 1,227,189/x
3. Step 3: Cross multiply
   642,755x = 1,227,189 × 1,227,189
4. Step 4: Simplify right side
   642,755x = 1,505,992,841,721
5. Step 5: Solve for x
   x = 1,505,992,841,721/642,755
6. Step 6: Final answer
   x = 2,343,027.81