Finding the Third Proportional to 342,642 and 504,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,642 : 504,030.50 = 504,030.50 : x
2. Step 2: Convert to fraction form
   342,642/504,030.50 = 504,030.50/x
3. Step 3: Cross multiply
   342,642x = 504,030.50 × 504,030.50
4. Step 4: Simplify right side
   342,642x = 254,046,744,930.25
5. Step 5: Solve for x
   x = 254,046,744,930.25/342,642
6. Step 6: Final answer
   x = 741,434.92