Finding the Third Proportional to 72,012 and 154,428

Step by Step Solution

1. Step 1: Write the proportion equation
   72,012 : 154,428 = 154,428 : x
2. Step 2: Convert to fraction form
   72,012/154,428 = 154,428/x
3. Step 3: Cross multiply
   72,012x = 154,428 × 154,428
4. Step 4: Simplify right side
   72,012x = 23,848,007,184
5. Step 5: Solve for x
   x = 23,848,007,184/72,012
6. Step 6: Final answer
   x = 331,167.13