Finding the Third Proportional to 520,966.69 and 786,996

Step by Step Solution

1. Step 1: Write the proportion equation
   520,966.69 : 786,996 = 786,996 : x
2. Step 2: Convert to fraction form
   520,966.69/786,996 = 786,996/x
3. Step 3: Cross multiply
   520,966.69x = 786,996 × 786,996
4. Step 4: Simplify right side
   520,966.69x = 619,362,704,016
5. Step 5: Solve for x
   x = 619,362,704,016/520,966.69
6. Step 6: Final answer
   x = 1,188,871.99