Finding the Third Proportional to 272,140.50 and 429,082

Step by Step Solution

1. Step 1: Write the proportion equation
   272,140.50 : 429,082 = 429,082 : x
2. Step 2: Convert to fraction form
   272,140.50/429,082 = 429,082/x
3. Step 3: Cross multiply
   272,140.50x = 429,082 × 429,082
4. Step 4: Simplify right side
   272,140.50x = 184,111,362,724
5. Step 5: Solve for x
   x = 184,111,362,724/272,140.50
6. Step 6: Final answer
   x = 676,530.55