Finding the Third Proportional to 517,155 and 803,596.50

Step by Step Solution

1. Step 1: Write the proportion equation
   517,155 : 803,596.50 = 803,596.50 : x
2. Step 2: Convert to fraction form
   517,155/803,596.50 = 803,596.50/x
3. Step 3: Cross multiply
   517,155x = 803,596.50 × 803,596.50
4. Step 4: Simplify right side
   517,155x = 645,767,334,812.25
5. Step 5: Solve for x
   x = 645,767,334,812.25/517,155
6. Step 6: Final answer
   x = 1,248,692.05