Finding the Third Proportional to 277,200 and 429,048

Step by Step Solution

1. Step 1: Write the proportion equation
   277,200 : 429,048 = 429,048 : x
2. Step 2: Convert to fraction form
   277,200/429,048 = 429,048/x
3. Step 3: Cross multiply
   277,200x = 429,048 × 429,048
4. Step 4: Simplify right side
   277,200x = 184,082,186,304
5. Step 5: Solve for x
   x = 184,082,186,304/277,200
6. Step 6: Final answer
   x = 664,077.15