Finding the Third Proportional to 272,112 and 429,024

Step by Step Solution

1. Step 1: Write the proportion equation
   272,112 : 429,024 = 429,024 : x
2. Step 2: Convert to fraction form
   272,112/429,024 = 429,024/x
3. Step 3: Cross multiply
   272,112x = 429,024 × 429,024
4. Step 4: Simplify right side
   272,112x = 184,061,592,576
5. Step 5: Solve for x
   x = 184,061,592,576/272,112
6. Step 6: Final answer
   x = 676,418.51