Finding the Third Proportional to 151,002.50 and 221,428

Step by Step Solution

1. Step 1: Write the proportion equation
   151,002.50 : 221,428 = 221,428 : x
2. Step 2: Convert to fraction form
   151,002.50/221,428 = 221,428/x
3. Step 3: Cross multiply
   151,002.50x = 221,428 × 221,428
4. Step 4: Simplify right side
   151,002.50x = 49,030,359,184
5. Step 5: Solve for x
   x = 49,030,359,184/151,002.50
6. Step 6: Final answer
   x = 324,698.99