Finding the Third Proportional to 642,753 and 1,227,185

Step by Step Solution

1. Step 1: Write the proportion equation
   642,753 : 1,227,185 = 1,227,185 : x
2. Step 2: Convert to fraction form
   642,753/1,227,185 = 1,227,185/x
3. Step 3: Cross multiply
   642,753x = 1,227,185 × 1,227,185
4. Step 4: Simplify right side
   642,753x = 1,505,983,024,225
5. Step 5: Solve for x
   x = 1,505,983,024,225/642,753
6. Step 6: Final answer
   x = 2,343,019.83