Finding the Third Proportional to 231,635.25 and 345,429

Step by Step Solution

1. Step 1: Write the proportion equation
   231,635.25 : 345,429 = 345,429 : x
2. Step 2: Convert to fraction form
   231,635.25/345,429 = 345,429/x
3. Step 3: Cross multiply
   231,635.25x = 345,429 × 345,429
4. Step 4: Simplify right side
   231,635.25x = 119,321,194,041
5. Step 5: Solve for x
   x = 119,321,194,041/231,635.25
6. Step 6: Final answer
   x = 515,125.37