Finding the Third Proportional to 520,086 and 776,696.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,086 : 776,696.50 = 776,696.50 : x
2. Step 2: Convert to fraction form
   520,086/776,696.50 = 776,696.50/x
3. Step 3: Cross multiply
   520,086x = 776,696.50 × 776,696.50
4. Step 4: Simplify right side
   520,086x = 603,257,453,112.25
5. Step 5: Solve for x
   x = 603,257,453,112.25/520,086
6. Step 6: Final answer
   x = 1,159,918.65