Finding the Third Proportional to 642,742 and 1,227,164

Step by Step Solution

1. Step 1: Write the proportion equation
   642,742 : 1,227,164 = 1,227,164 : x
2. Step 2: Convert to fraction form
   642,742/1,227,164 = 1,227,164/x
3. Step 3: Cross multiply
   642,742x = 1,227,164 × 1,227,164
4. Step 4: Simplify right side
   642,742x = 1,505,931,482,896
5. Step 5: Solve for x
   x = 1,505,931,482,896/642,742
6. Step 6: Final answer
   x = 2,342,979.74