Finding the Third Proportional to 358,242 and 522,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   358,242 : 522,595.50 = 522,595.50 : x
2. Step 2: Convert to fraction form
   358,242/522,595.50 = 522,595.50/x
3. Step 3: Cross multiply
   358,242x = 522,595.50 × 522,595.50
4. Step 4: Simplify right side
   358,242x = 273,106,056,620.25
5. Step 5: Solve for x
   x = 273,106,056,620.25/358,242
6. Step 6: Final answer
   x = 762,350.75