Finding the Third Proportional to 666,348 and 1,059,798

Step by Step Solution

1. Step 1: Write the proportion equation
   666,348 : 1,059,798 = 1,059,798 : x
2. Step 2: Convert to fraction form
   666,348/1,059,798 = 1,059,798/x
3. Step 3: Cross multiply
   666,348x = 1,059,798 × 1,059,798
4. Step 4: Simplify right side
   666,348x = 1,123,171,800,804
5. Step 5: Solve for x
   x = 1,123,171,800,804/666,348
6. Step 6: Final answer
   x = 1,685,563.40