Finding the Third Proportional to 917,316 and 1,945,638

Step by Step Solution

1. Step 1: Write the proportion equation
   917,316 : 1,945,638 = 1,945,638 : x
2. Step 2: Convert to fraction form
   917,316/1,945,638 = 1,945,638/x
3. Step 3: Cross multiply
   917,316x = 1,945,638 × 1,945,638
4. Step 4: Simplify right side
   917,316x = 3,785,507,227,044
5. Step 5: Solve for x
   x = 3,785,507,227,044/917,316
6. Step 6: Final answer
   x = 4,126,721.03