Finding the Third Proportional to 353,900 and 764,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,900 : 764,112.50 = 764,112.50 : x
2. Step 2: Convert to fraction form
   353,900/764,112.50 = 764,112.50/x
3. Step 3: Cross multiply
   353,900x = 764,112.50 × 764,112.50
4. Step 4: Simplify right side
   353,900x = 583,867,912,656.25
5. Step 5: Solve for x
   x = 583,867,912,656.25/353,900
6. Step 6: Final answer
   x = 1,649,810.43