Finding the Third Proportional to 917,112 and 1,223,142

Step by Step Solution

1. Step 1: Write the proportion equation
   917,112 : 1,223,142 = 1,223,142 : x
2. Step 2: Convert to fraction form
   917,112/1,223,142 = 1,223,142/x
3. Step 3: Cross multiply
   917,112x = 1,223,142 × 1,223,142
4. Step 4: Simplify right side
   917,112x = 1,496,076,352,164
5. Step 5: Solve for x
   x = 1,496,076,352,164/917,112
6. Step 6: Final answer
   x = 1,631,290.78