Finding the Third Proportional to 306,036 and 459,054.56

Step by Step Solution

1. Step 1: Write the proportion equation
   306,036 : 459,054.56 = 459,054.56 : x
2. Step 2: Convert to fraction form
   306,036/459,054.56 = 459,054.56/x
3. Step 3: Cross multiply
   306,036x = 459,054.56 × 459,054.56
4. Step 4: Simplify right side
   306,036x = 210,731,091,352.07
5. Step 5: Solve for x
   x = 210,731,091,352.07/306,036
6. Step 6: Final answer
   x = 688,582.69