Finding the Third Proportional to 230,456 and 309,972

Step by Step Solution

1. Step 1: Write the proportion equation
   230,456 : 309,972 = 309,972 : x
2. Step 2: Convert to fraction form
   230,456/309,972 = 309,972/x
3. Step 3: Cross multiply
   230,456x = 309,972 × 309,972
4. Step 4: Simplify right side
   230,456x = 96,082,640,784
5. Step 5: Solve for x
   x = 96,082,640,784/230,456
6. Step 6: Final answer
   x = 416,924.01