Finding the Third Proportional to 705,812 and 1,665,910

Step by Step Solution

1. Step 1: Write the proportion equation
   705,812 : 1,665,910 = 1,665,910 : x
2. Step 2: Convert to fraction form
   705,812/1,665,910 = 1,665,910/x
3. Step 3: Cross multiply
   705,812x = 1,665,910 × 1,665,910
4. Step 4: Simplify right side
   705,812x = 2,775,256,128,100
5. Step 5: Solve for x
   x = 2,775,256,128,100/705,812
6. Step 6: Final answer
   x = 3,932,004.74