Finding the Third Proportional to 495,561 and 787,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   495,561 : 787,648.50 = 787,648.50 : x
2. Step 2: Convert to fraction form
   495,561/787,648.50 = 787,648.50/x
3. Step 3: Cross multiply
   495,561x = 787,648.50 × 787,648.50
4. Step 4: Simplify right side
   495,561x = 620,390,159,552.25
5. Step 5: Solve for x
   x = 620,390,159,552.25/495,561
6. Step 6: Final answer
   x = 1,251,894.64