Finding the Third Proportional to 272,108 and 429,030

Step by Step Solution

1. Step 1: Write the proportion equation
   272,108 : 429,030 = 429,030 : x
2. Step 2: Convert to fraction form
   272,108/429,030 = 429,030/x
3. Step 3: Cross multiply
   272,108x = 429,030 × 429,030
4. Step 4: Simplify right side
   272,108x = 184,066,740,900
5. Step 5: Solve for x
   x = 184,066,740,900/272,108
6. Step 6: Final answer
   x = 676,447.37