Finding the Third Proportional to 303,225.75 and 358,584

Step by Step Solution

1. Step 1: Write the proportion equation
   303,225.75 : 358,584 = 358,584 : x
2. Step 2: Convert to fraction form
   303,225.75/358,584 = 358,584/x
3. Step 3: Cross multiply
   303,225.75x = 358,584 × 358,584
4. Step 4: Simplify right side
   303,225.75x = 128,582,485,056
5. Step 5: Solve for x
   x = 128,582,485,056/303,225.75
6. Step 6: Final answer
   x = 424,048.70