Finding the Third Proportional to 363,357 and 520,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   363,357 : 520,123.50 = 520,123.50 : x
2. Step 2: Convert to fraction form
   363,357/520,123.50 = 520,123.50/x
3. Step 3: Cross multiply
   363,357x = 520,123.50 × 520,123.50
4. Step 4: Simplify right side
   363,357x = 270,528,455,252.25
5. Step 5: Solve for x
   x = 270,528,455,252.25/363,357
6. Step 6: Final answer
   x = 744,525.23