Finding the Third Proportional to 407,659.50 and 599,499.56

Step by Step Solution

1. Step 1: Write the proportion equation
   407,659.50 : 599,499.56 = 599,499.56 : x
2. Step 2: Convert to fraction form
   407,659.50/599,499.56 = 599,499.56/x
3. Step 3: Cross multiply
   407,659.50x = 599,499.56 × 599,499.56
4. Step 4: Simplify right side
   407,659.50x = 359,399,725,437.69
5. Step 5: Solve for x
   x = 359,399,725,437.69/407,659.50
6. Step 6: Final answer
   x = 881,617.44