Finding the Third Proportional to 359,289 and 563,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,289 : 563,618.50 = 563,618.50 : x
2. Step 2: Convert to fraction form
   359,289/563,618.50 = 563,618.50/x
3. Step 3: Cross multiply
   359,289x = 563,618.50 × 563,618.50
4. Step 4: Simplify right side
   359,289x = 317,665,813,542.25
5. Step 5: Solve for x
   x = 317,665,813,542.25/359,289
6. Step 6: Final answer
   x = 884,151.24