Finding the Third Proportional to 508,650 and 786,360

Step by Step Solution

1. Step 1: Write the proportion equation
   508,650 : 786,360 = 786,360 : x
2. Step 2: Convert to fraction form
   508,650/786,360 = 786,360/x
3. Step 3: Cross multiply
   508,650x = 786,360 × 786,360
4. Step 4: Simplify right side
   508,650x = 618,362,049,600
5. Step 5: Solve for x
   x = 618,362,049,600/508,650
6. Step 6: Final answer
   x = 1,215,692.62