Finding the Third Proportional to 673,758 and 990,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   673,758 : 990,931.50 = 990,931.50 : x
2. Step 2: Convert to fraction form
   673,758/990,931.50 = 990,931.50/x
3. Step 3: Cross multiply
   673,758x = 990,931.50 × 990,931.50
4. Step 4: Simplify right side
   673,758x = 981,945,237,692.25
5. Step 5: Solve for x
   x = 981,945,237,692.25/673,758
6. Step 6: Final answer
   x = 1,457,415.33