Finding the Third Proportional to 331,789 and 503,827.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,789 : 503,827.50 = 503,827.50 : x
2. Step 2: Convert to fraction form
   331,789/503,827.50 = 503,827.50/x
3. Step 3: Cross multiply
   331,789x = 503,827.50 × 503,827.50
4. Step 4: Simplify right side
   331,789x = 253,842,149,756.25
5. Step 5: Solve for x
   x = 253,842,149,756.25/331,789
6. Step 6: Final answer
   x = 765,071.02