Finding the Third Proportional to 705,789 and 1,665,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   705,789 : 1,665,868.50 = 1,665,868.50 : x
2. Step 2: Convert to fraction form
   705,789/1,665,868.50 = 1,665,868.50/x
3. Step 3: Cross multiply
   705,789x = 1,665,868.50 × 1,665,868.50
4. Step 4: Simplify right side
   705,789x = 2,775,117,859,292.25
5. Step 5: Solve for x
   x = 2,775,117,859,292.25/705,789
6. Step 6: Final answer
   x = 3,931,936.97