Finding the Third Proportional to 177,238.50 and 272,428

Step by Step Solution

1. Step 1: Write the proportion equation
   177,238.50 : 272,428 = 272,428 : x
2. Step 2: Convert to fraction form
   177,238.50/272,428 = 272,428/x
3. Step 3: Cross multiply
   177,238.50x = 272,428 × 272,428
4. Step 4: Simplify right side
   177,238.50x = 74,217,015,184
5. Step 5: Solve for x
   x = 74,217,015,184/177,238.50
6. Step 6: Final answer
   x = 418,740.93