Finding the Third Proportional to 252,162 and 390,433.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,162 : 390,433.50 = 390,433.50 : x
2. Step 2: Convert to fraction form
   252,162/390,433.50 = 390,433.50/x
3. Step 3: Cross multiply
   252,162x = 390,433.50 × 390,433.50
4. Step 4: Simplify right side
   252,162x = 152,438,317,922.25
5. Step 5: Solve for x
   x = 152,438,317,922.25/252,162
6. Step 6: Final answer
   x = 604,525.34