Finding the Third Proportional to 367,458 and 520,091

Step by Step Solution

1. Step 1: Write the proportion equation
   367,458 : 520,091 = 520,091 : x
2. Step 2: Convert to fraction form
   367,458/520,091 = 520,091/x
3. Step 3: Cross multiply
   367,458x = 520,091 × 520,091
4. Step 4: Simplify right side
   367,458x = 270,494,648,281
5. Step 5: Solve for x
   x = 270,494,648,281/367,458
6. Step 6: Final answer
   x = 736,123.99