Finding the Third Proportional to 351,171 and 770,695.50

Step by Step Solution

1. Step 1: Write the proportion equation
   351,171 : 770,695.50 = 770,695.50 : x
2. Step 2: Convert to fraction form
   351,171/770,695.50 = 770,695.50/x
3. Step 3: Cross multiply
   351,171x = 770,695.50 × 770,695.50
4. Step 4: Simplify right side
   351,171x = 593,971,553,720.25
5. Step 5: Solve for x
   x = 593,971,553,720.25/351,171
6. Step 6: Final answer
   x = 1,691,402.63