Finding the Third Proportional to 231,322 and 345,063

Step by Step Solution

1. Step 1: Write the proportion equation
   231,322 : 345,063 = 345,063 : x
2. Step 2: Convert to fraction form
   231,322/345,063 = 345,063/x
3. Step 3: Cross multiply
   231,322x = 345,063 × 345,063
4. Step 4: Simplify right side
   231,322x = 119,068,473,969
5. Step 5: Solve for x
   x = 119,068,473,969/231,322
6. Step 6: Final answer
   x = 514,730.44