Finding the Third Proportional to 498,960 and 781,818.75

Step by Step Solution

1. Step 1: Write the proportion equation
   498,960 : 781,818.75 = 781,818.75 : x
2. Step 2: Convert to fraction form
   498,960/781,818.75 = 781,818.75/x
3. Step 3: Cross multiply
   498,960x = 781,818.75 × 781,818.75
4. Step 4: Simplify right side
   498,960x = 611,240,557,851.56
5. Step 5: Solve for x
   x = 611,240,557,851.56/498,960
6. Step 6: Final answer
   x = 1,225,029.18