Finding the Third Proportional to 231,012 and 345,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,012 : 345,559.50 = 345,559.50 : x
2. Step 2: Convert to fraction form
   231,012/345,559.50 = 345,559.50/x
3. Step 3: Cross multiply
   231,012x = 345,559.50 × 345,559.50
4. Step 4: Simplify right side
   231,012x = 119,411,368,040.25
5. Step 5: Solve for x
   x = 119,411,368,040.25/231,012
6. Step 6: Final answer
   x = 516,905.48