Finding the Third Proportional to 231,048 and 309,052

Step by Step Solution

1. Step 1: Write the proportion equation
   231,048 : 309,052 = 309,052 : x
2. Step 2: Convert to fraction form
   231,048/309,052 = 309,052/x
3. Step 3: Cross multiply
   231,048x = 309,052 × 309,052
4. Step 4: Simplify right side
   231,048x = 95,513,138,704
5. Step 5: Solve for x
   x = 95,513,138,704/231,048
6. Step 6: Final answer
   x = 413,390.89