Finding the Third Proportional to 231,317 and 535,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,317 : 535,459.50 = 535,459.50 : x
2. Step 2: Convert to fraction form
   231,317/535,459.50 = 535,459.50/x
3. Step 3: Cross multiply
   231,317x = 535,459.50 × 535,459.50
4. Step 4: Simplify right side
   231,317x = 286,716,876,140.25
5. Step 5: Solve for x
   x = 286,716,876,140.25/231,317
6. Step 6: Final answer
   x = 1,239,497.64