Finding the Third Proportional to 231,580 and 351,865.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,580 : 351,865.50 = 351,865.50 : x
2. Step 2: Convert to fraction form
   231,580/351,865.50 = 351,865.50/x
3. Step 3: Cross multiply
   231,580x = 351,865.50 × 351,865.50
4. Step 4: Simplify right side
   231,580x = 123,809,330,090.25
5. Step 5: Solve for x
   x = 123,809,330,090.25/231,580
6. Step 6: Final answer
   x = 534,628.77