Finding the Third Proportional to 277,290 and 446,429.81

Step by Step Solution

1. Step 1: Write the proportion equation
   277,290 : 446,429.81 = 446,429.81 : x
2. Step 2: Convert to fraction form
   277,290/446,429.81 = 446,429.81/x
3. Step 3: Cross multiply
   277,290x = 446,429.81 × 446,429.81
4. Step 4: Simplify right side
   277,290x = 199,299,577,488.79
5. Step 5: Solve for x
   x = 199,299,577,488.79/277,290
6. Step 6: Final answer
   x = 718,740.59